geology on mars lesson 2.1 activity 1 answer key

1)a distant luminous object travels rapidly away from an observer.

2)Dark matter provides the gravity that allows the stars to rotate at the same speed.

3)1 galaxy is moving away from each other 2 has decreased dramatically 3 uniformly across the universe

4)1 matter 2 formations of galaxies 3 remained uniform

5)Nuclear fission takes place in the core of stars.

6)The gravity of dark matter distorts light from distant sources.

7)They both occur in the nucleus of an atom. -They both release large amounts of energy.

8)It is the proportion predicted to be present in the early universe.

8)Through dark energy, the universe is expanding at a faster and faster rate. -Because of dark matter, gravitational interactions cause galaxies to develop.

9)It verifies that the early universe was once extremely hot.

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The first piece of evidence Hubble has discovered is that galaxies are moving away from each other. The second piece of evidence is that the universal temperature has increased dramatically. The third piece of evidence is that cosmic microwave background radiation is found uniformly throughout the universe.

We can arrive at this answer because:

Furthermore, Hubble claims that cosmic microwave background radiation is found uniformly throughout the universe and that this is a trace of the Big Bang.

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Answer:

360,000 kilometers

Explanation:

Because the moon is the closest to the earth and sorry if it was no help and it wrong but i think its 360,000 kilometers.

Earth's crust an increased presence of greenhouse gases in the atmosphere. So, correct option is D.

The Great Acceleration refers to a period of rapidly increasing human impacts on the Earth's systems, including the biosphere, atmosphere, oceans, and geosphere. It began in the mid-20th century and has accelerated since then, resulting in significant changes to the natural systems of the planet. Some of the key drivers of the Great Acceleration include population growth, technological innovations, economic development, globalization, and resource consumption.

These changes have resulted in a range of impacts, such as increased greenhouse gas emissions, loss of biodiversity, deforestation, and pollution of air, water, and soil. The Great Acceleration has also led to the creation of a so-called "technosphere," a term used to describe the rapidly growing interconnected network of technological systems that humans have created to support our rapidly growing population and demand for resources.

The Great Acceleration is widely seen as a major challenge to global sustainability, as it is putting significant pressure on the Earth's systems and threatening the long-term health and stability of the planet. It is a crucial issue for policymakers and the global community, who must work together to find sustainable solutions to these challenges and ensure that the Earth's systems are protected for future generations.

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Answer:

i beleive it is c. rate at which an object travels a distance.

Explanation:

Answer:

Mitosis:

A single division occurs, separating sister chromatids

End result is two diploid cells that are genetically identical to each other and the parent cell

Meiosis:

The first division separates homologous pairs; the second division separates sister chromatids

Homologous chromosomes pair up and form chiasmata

Homologous pairs of chromosomes line up on the metaphase plate

Daughter cells contain recombinant chromosomes

End result is four haploid cells that are genetically different from each other and the parent cell  

Mitosis and Meiosis:

Chromosomes duplicate during interphase

Process starts with a diploid cell

Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell

Explanation:

Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.

A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.  

Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis.  During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.

Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.

Giant Impact Theory: The Moon was formed by a collision between Earth and a planet the size of Mars.

Colliding planetesimal Hypothesis: Planetesimals collided and merged to form the Moon.

Capture Hypothesis:  As it passed past, Earth's gravity locked the Moon into orbit.

Accretion Hypothesis: The Moon was produced from the same material cloud that created the Earth.

According to scientists, the following are the recognized theories of lunar formation:

According to this idea, a Mars-sized object named Theia collided with Earth, leaving a large portion of the planet to float in space, eventually forming the Moon. This is the most widely accepted idea of all since the Moon is moving away from Earth and its rocks are fairly similar to those of Earth.

1:  According to this idea, the Moon was born somewhere else and was drawn into Earth's orbit by its gravity as it passed by.

2. Capture Hypothesis: According to this idea, the Moon and Earth arose from the same cloud of material at the same time.

3. Accretion Hypothesis:  According to this idea, a vast number of small rocky objects known as planetesimals crashed and merged over a long period of time.

4. Colliding planetesimal Hypothesis: According to this idea, the Moon was formed by a huge number of small rocky objects known as planetesimals colliding and combining over a long period of time.

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Answer:

(1) Calcium binds to troponin C, causing the conformational shift in tropomyosin that reveals myosin-binding sites on actin. (2) ATP then binds to myosin. (3) ATP is then hydrolyzed.

Explanation:

Calcium ions, troponin C and ATP play a crucial role in muscle contraction.

The sarcomere has to shorten in order for a muscle cell to contract. Sarcomeres' constituent thick and thin filaments, however, do not shorten. Instead, they go past one another, shortening the sarcomere while keeping the filaments at their original length.

The identified bands on the sarcomere were shown to differ at various levels of muscular contraction and relaxation, leading to the development of the sliding filament hypothesis of muscle contraction. The binding of myosin to actin, which results in cross-bridges that cause filament movement, is the process of contraction.

Some parts of a sarcomere shrink while others remain the same size. A sarcomere is defined as the space between two adjacent Z discs or Z lines; this space is shrunk as a muscle contract. Only thick filaments are present in the H zone, which is the center of the A zone, and it shortens during contraction.

Only tiny filaments may be seen in the I band, and it also shortens. Although the A band does not shorten during contraction—it stays the same length—it does become closer together before vanishing altogether.

Up until the Z discs get close to the thick filaments, thin filaments are drawn toward the center of the sarcomere by the thick filaments. As the thin filaments migrate inward, the zone of overlap—where thick and thin filaments share the same space—grows.

Therefore, calcium ions, troponin C and ATP play a crucial role in muscle contraction.

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Answer:

recessive

Explanation:

The producer could address the concerns of users who find the game music annoying by changing the game music and the way players move through the level (option d).

Alternatively, they could also consider changing the game concept and the storyline to keep players engaged and motivated to progress through the levels. Another option would be to change the way characters look or how players move through the level to make it more enjoyable and less frustrating.

Ultimately, the producer should take into account the feedback of their users and try to make improvements to the game that will enhance their overall experience. A combination of these changes could potentially make the game more appealing to a wider audience.

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Most articles pass right through the atom, this means that most of the atom is an empty space.

An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.

Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.

As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.

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Answer:

It acts as a protective layer just like the cell wall but the cell membrane isn't as stong as the wall. Also the membrane controls what enters and leaves the cell.

Explanation:

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The long, bushy tail of the raccoon may be a selective advantage for this species because the bushy tail helps keep the face warm during a snowstorm (Option d). In addition, it may serve as camouflage and also may act to communicate with other members of the population.

An evolutionary selective advantage is a feature in a species that confer an advantage to survive and reproduce in a particular environmental condition, which may be associated such as in this case to the tail in raccoons.

Therefore, with this data, we can see that an evolutionary selective advantage is any phenotypic feature that enhances the survival and or reproductive rate of individuals in a population or species.

Complete question:

The opossum is a new arrival in southern Ontario. Its niche is similar to that of the raccoon. An opossum has a long, bare, rat-like tail. A raccoon has a long, bushy tail. How is this a selective advantage for the raccoon?

selective advantage only applies to populations

the opossum  tail can grab onto a tree for balance

tail fur does not have an impact on survival

the bushy tail helps keep the face warm during a snowstorm

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It is positively charged and includes most of the atom's mass.

Atoms are the basic units of matter and they are composed of a nucleus

and one or more electrons bound to the nucleus.The atomic nucleus is the small,

dense region at the center of an atom which consists of one or more protons and a similar number of neutrons.The protons are positively electric charged, the electrons have a negative electric charge, and the neutrons have no electric charge. Protons and neutrons are heavier than electrons and reside in the nucleus  and they are bound together to form a nucleus by the nuclear force.

More than 99.94% of an atom's mass is in the nucleus.

Mendel chose the pea, one of many species, to study because the plants and seeds exhibit a variety of distinctive characteristics that appear in two readily recognizable forms (e.g., seed shape is round or wrinkled; plant height is tall or short).

George Mendel, the father of genetics, chose pea plants for his genetic experiments for a variety of reasons, including

• Garden plants are simple to grow.

• Pea plant blooms are hermaphrodites, which means they exhibit traits of both sexes.

• Plants of the pure breed can be easily obtained through self-fertilization.

• Pea plants produce more quickly than other plants.

• They have a high rate of survival and remarkable disease resistance.

Gregor Mendel's research on pea plants led him to the fundamental ideas of inheritance. He came to the idea that genes are passed down from each parent as unique, paired units.

Mendel observed how parental genes separated and if they showed up as dominant or recessive qualities in the offspring. Gregor Mendel experimented with hybridization on about 29,000 pea plants. Mendel found that peas were the perfect subject since they possessed seven easily observable features that he could control. He set up two settings before starting his pea studies.

As a result, we can infer that Mendel chose the pea as the species to study out of all the others since it has a diversity of distinguishing traits in both its plants and seeds.

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Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

Answer:

The correct answer is - reuptake.

Explanation:

The process that reabsorbs the neurotransmitters known as reuptake which reduced the number of neurotransmitter molecules. Neurotransmitter transporter found on the outer membrane of the plasma membrane assists the process of reuptake by reabsorbing the neurotransmitter molecules from the specific synaptic gap. Neurotransmitters recycle by this process in order to reuse again after a time for the particular signal to last.

Thus, the correct answer is - reuptake.

A steroid hormone approaches its target cell, therefore the hormone will enter the nucleus and is what will happen first which is therefore denoted as option A.

This is referred to as a chemical messenger which is released directly into the bloodstream and is responsible for the control of certain metabolic reactions occurring in the cell and  an example is steroid hormone such as androgens.

In a situation whereby a steroid hormone approaches its target cell, it first passes through the plasma membrane before it then becomes adhered to the receptors which are present in the nucleus or cytoplasm.

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Answer:

its a

Explanation:

Le-principle Chatelier states that a rise in temperature favors endothermic reactions while a drop favors exothermic reactions. Hence, the statement is true.

Pressure increase moves the equilibrium to the side where there are fewer moles of gaseous species.  A reaction that is endothermic involves the absorption of heat, whereas a reaction that is exothermic involves the evolution of heat.

The extra heat is absorbed during the forward reaction when the temperature is raised for an endothermic reaction. As a result, the system's overall heat output falls, and the temperature drops. Hence, this negates the impact of the temperature rise high. Thus, the endothermic process is favored by the rise in temperature.

Any chemical process that takes heat from its surroundings is said to be endothermic. The energy that is absorbed offers the activation energy for the reaction which occurs.

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The given statement is true, when the temperature is raised, according to le chatelier's principle the reaction will proceed toward the exothermic reactions in order to establish a new equilibrium condition.

Le-principle According to  chatelier's, increasing temperatures favor endothermic reactions whereas decreasing temperatures favor exothermic ones is true statement.

As pressure rises, the equilibrium shifts to the side where there are less gaseous species molecules. While an exothermic process includes the evolution of heat, an endothermic reaction involves the absorption of heat. When the temperature is increased for an endothermic reaction, the extra heat is absorbed during the forward reaction. The system's overall heat output decreases as a result, and the temperature declines. This therefore cancels out the effects of the significant temperature increase. The increase in temperature favors the endothermic process as a result. Endothermic refers to any chemical reaction that absorbs heat from the environment.

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Answer:

True

Explanation:

have a nice day.

The effect of a country with a transitional economy on the globalization process is to further the globalization process of the global economy and accelerate global interdependence.

A transitional economy denotes an economic system undergoing a metamorphosis from a centrally controlled economy to a market-oriented one. This undertaking can be arduous and intricate, demanding considerable time for the economy to complete the full transition.

Nevertheless, the advantages of embracing a market economy can be noteworthy, encompassing amplified economic expansion, enhanced effectiveness, and heightened ingenuity.

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i can't understand your question can you explain it please

Answer:

I think the answer is C number of organisms/ area

Answer:

Anterior pituitary

Explanation:

Most tropic hormones are produced and secreted by the anterior pituitary. The hypothalamus secretes tropic hormones that target the anterior pituitary, and the thyroid gland secretes thyroxine, which targets the hypothalamus and therefore can be considered a tropic hormone.

Many of the hormones produced by the anterior pituitary are tropic hormones (tropins)

Answer:anterior pituitary. I hope this helps

Explanation:

Most tropic hormones are produced and secreted by the anterior pituitary. The hypothalamus secretes tropic hormones that target the anterior pituitary, and the thyroid gland secretes thyroxine, which targets the hypothalamus and therefore can be considered a tropic hormone.The anterior pituitary produces ACTH. It is considered a tropic hormone. Tropic hormones indirectly affect target cells by first stimulating other endocrine glands

Answer:

Involves two intermediate hosts which are :

Explanation:

The life cycle of Trypanosoma cruzi involves two intermediate hosts: the invertebrate vector (triatomine insects) and the vertebrate host (humans) and has three developmental stages namely, trypomastigotes, amastigotes and epimastigotes

I'm here!!!Explanation:

Answer: Scientists think that all modern plants, animals, and fungi can be trace to protist ancestors because the protists is the root of all eukaryotic diversity. yw.