Which of these is true for a fetus by the end of the first trimester of fetal
development?

A. Its breathing rate is regular.
B. It can survive outside the uterus.
c. Its organs have all formed.
D. It has a beating heart.

Can someone help me please

Answer:

it is the part visible to the human eye unless it rains.

Answer:

Pansy 1 Genotype: TtRr

Pansy 2 Genotype: ttrr

Pansy 1 Gametes: TR, Tr, tR, tr

Pansy 2 Gametes: All tr

Phenotypic ratio of offspring: 1:1:1:1 (1 Tall red: 1 Tall white: 1 Short Red: 1 short white)

Explanation:

This is a cross involving two different genes; one coding for height and the other for colour in pansies. The allele for Tallness (T) is dominant over the allele for shortness (t) in the first gene while the allele for red color (R) is dominant over the allele for white color (r) in the second gene.

According to the question, a pansy

that is heterozygous for both traits will have a genotype: TtRr while a pansy that is homozygous recessive for both traits will have a genotype: ttrr

In a cross between a TtRr and ttrr, the following allelic combinations of gametes will be produced by each pansy;

TtRr- TR, Tr, tR and tr

ttrr- tr, tr, tr, tr

Using these gametes in a punnet square (see attached image), a phenotypic ratio 1:1:1:1 consisting of (4 Tall red: 4 Tall white: 4 Short Red: 4 short white) offsprings will be produced.

Answer:

a mineral is scraped or rubbed hardly on sandpaper or unglazed porcelain

( please mark me as brainliest that would be most appreiciated )

Answer:

The streak test is done by scraping a specimen of the mineral across a piece of unglazed porcelain known as a " streak plate."

Explanation:

The "streak test" is a method used to determine the color of a mineral in powdered form. The color of a mineral's powder is often a very important property for identifying the mineral. The streak test is done by scraping a specimen of the mineral across a piece of unglazed porcelain known as a " streak plate."

Answer:

the stages of mitosis are prophase, prometaphase, metaphase, anaphase, and telophase

the stages of meiosis are prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis.

Explanation:

Explanation:

Scientists use relative and absolute dating to date rock layers. They can then organize these rock layers based on their age from oldest to youngest on the geologic time scale. Based on this organization, they can tell which organisms lived and what was happening to Earth at that time.

Answer:

bacteria are found everywhere even in hot springs. Bacteria are different from other organisms because they don't have membranes bound organelles .they replicates to produce

Explanation:

Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.

Many types of bacteria, if environmental conditions become unfavourable (lack of water, increase in temperature, etc), will go into a sort of dormant state, called an Endospore.

Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or Golgi apparatus.

Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.

Hope my answer helps you ✌️

Mark BRAINLIEST

Answer:

talk to your teacher

Explanation:

talk to your teacher about your missing assignment. they will look for it for you, but if they can't find it, you might have to redo the assignment. they might also give you an exemption on the assignment, but that's unlikely.

if you're worried about talking to them face-to-face, you could email them.

Answer:

1) true

2)false

3)true

4)false

5)true

6)true

7)true

8)true

Explanation:

I am not sure about this.

Answer:

1) true

2)false

3)true

4)false

5)true

6)true

7)true

8)true

Explanation:

i not sure if it is correct but this is what i got

Vandana Shiva is an Indian scholar, environmental activist, and author known for her work in the field of environmental sustainability, biodiversity conservation, and social justice. She was born on November 5, 1952, in Dehradun, India. Shiva has a background in physics and earned her Ph.D. in philosophy from the University of Western Ontario, Canada.

Shiva is a prominent advocate for sustainable agriculture, seed sovereignty, and the rights of small-scale farmers. She is known for her opposition to genetically modified organisms (GMOs) and the negative impacts of industrial agriculture on the environment and local communities. Shiva has been involved in grassroots movements and organizations, including Navdanya, which promotes seed conservation and organic farming practices.

Vandana Shiva has authored numerous books, including "Staying Alive: Women, Ecology, and Development," "Earth Democracy: Justice, Sustainability, and Peace," and "Making Peace with the Earth." She has received several awards for her work, including the Right Livelihood Award (Alternative Nobel Prize) in 1993. Shiva continues to be actively involved in raising awareness about sustainable agriculture, biodiversity, and social justice issues on a global scale.

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Answer:

S - Savannas are typically found in tropical or subtropical regions.

S - Savannas tend to have more trees and shrubs.

S - Savanna's climate is drier than that of a grassland.

G - Grasslands are found in temperature regions.

G - Temperature Grasslands are mainly devoid of trees, receive less rainfall than Savannas & endure broader temperature extremes.

G - Grasslands make up 25 percent of the Earth's land surface and dominate in regions with limited rainfall, which prevents forest growth. This results from nearby mountain ranges that cause rain shadows over adjacent open-range lands.

B - Both represent the world's richest and most diverse ecosystems. They both provide a home for a quarter of the world's population and a habitat for thousands of plants and animals.

B - Many species gather in vast numbers, graze on the varied grasses, and can be found nowhere else on Earth. The coexistence between wildlife and grasses is key to healthy ecosystems. Animal migrations regenerate the landscapes, by controlling pests, dispersing seeds, and trampling invasive species. Through this partnership, grasslands and savannahs generate vital benefits for both people and nature.

B - Ecosystems such as these two in specific are essential for climate mitigation – they store carbon, locking it deep in the soil and extensive root systems. They are the source of or support many of the world’s biggest rivers and wetlands, ensure food security, support livelihoods, and are embedded in the cultural identity of millions of people.

(Also, A savanna or savannah is a mixed woodland-grassland<---similarity)

Explanation: Just research. I decided to state 3 characteristics for both The Savanna and The Grasslands, and then 3 for "B" (both).

Answer:

Dispersal is the action of seeds blowing, or in other words, scattering away from the first seed plant.

Answer:

its gotta be B

Explanation:

i tried my best looking at that and it broke my brain but i was able to fine the question on my own so B

A pedigree chart is used to track inherited traits through generations.

A pedigree chart is a visual tool that represents the inheritance patterns of specific traits or genetic conditions within a family. It helps to trace the occurrence of traits, diseases, or genetic conditions across multiple generations by depicting the relationships between individuals and their affected or unaffected status.

Pedigree charts are commonly used in genetics and genetic counseling to analyze patterns of inheritance, identify carriers of genetic disorders, determine the probability of passing on certain traits or diseases, and study the transmission of traits within families. By examining the patterns of inheritance in a pedigree chart, one can gain insights into the mode of inheritance, such as autosomal dominant, autosomal recessive, or X-linked inheritance, and make predictions about the likelihood of certain traits or conditions appearing in future generations.

Answer:intinko su los tios

Explanation:yepaks

Answer:

b,The sand increases friction by increasing roughness.

Explanation:

i took the test

living things

every living thig has at least one right

but nothing can function with just one cell

makes sense? hah hope it helped

In the lower reaches of a stream, where the discharge is greater, since friction is less the stream need not be so steep to transport the load. If it were steeper than needed to transport the sediments erosion would result. But this would decrease the gradient leading to a decrease in erosion.

Explanation:

Yes, because the proton and electron numbers are the same. Atoms from the same element with difference neutron numbers is called a isotope.  

Answer:

In bioethics, the ethics of cloning refers to a variety of ethical positions regarding the practice and possibilities of cloning, especially human cloning. While many of these views are religious in origin, some of the questions raised by cloning are faced by secular perspectives as well. Perspectives on human cloning are theoretical, as human therapeutic and reproductive cloning are not commercially used; animals are currently cloned in laboratories and in livestock production.

Advocates support the development of therapeutic cloning in order to generate tissues and whole organs to treat patients who otherwise cannot obtain transplants, to avoid the need for immunosuppressive drugs, and to stave off the effects of aging. Advocates for reproductive cloning believe that parents who cannot otherwise procreate should have access to technology.

Opponents of cloning have concerns that technology is not yet developed enough to be safe, and that it could be prone to abuse, either in the form of clones raised as slaves, or leading to the generation of humans from whom organs and tissues would be harvested. Opponents have also raised concerns about how cloned individuals could integrate with families and with society at large.

Religious groups are divided, with some opposing the technology as usurping God's place and, to the extent embryos are used, destroying a human life; others support therapeutic cloning's potential life-saving benefits.

Cloning of animals is opposed by animal-groups due to the number of cloned animals that suffer from malformations before they die, and while meat of cloned animals has been approved by the US FDA, its use is opposed by some other groups concerned about food safety.

(I found this info)

https://en.wikipedia.org/wiki/Ethics_of_cloning

Answer: I would think A (The distance from the lake) but if I'm wrong please let me know and ill fix it ASAP!

Explanation: A manipulated variable is an independent variable subject to the changes of an experiment to analyze its effect on a dependent variable.

Answer:

Liquids (substances that exist in the liquid state) don't have any fixed shape and occupy a fixed volume. They are slightly compressible and take the shape of their containers. Gases (substances that exist in the gaseous state) don't have any fixed shape and don't occupy any fixed volume.

Hope this helps! :)

Answer:

B. Reverse

Explanation:

The reverse fault is the type of fault that is created by two faults under compression

Reverse fault is under compression. A reverse fault occurs when the hanging wall moves upward and over the footwall due to compression forces in the earth's crust.

This type of fault is commonly associated with convergent plate boundaries, where two plates are moving towards each other and compressing the rock between them. The reverse fault is characterized by a steep dip angle and a short horizontal displacement.

A reverse fault is a type of dip-slip fault, where the movement of the rocks is vertical, and the hanging wall moves upward and over the footwall.

This type of fault is caused by compressional forces that push the rocks together and shorten the distance between them. As a result, the rock mass on one side of the fault plane is pushed upwards, and the rock mass on the other side is pushed downwards.

In summary, a reverse fault is a type of fault where the hanging wall moves upward and over the footwall due to compressional forces, and it is commonly found at convergent plate boundaries where the crust is undergoing compression.

Learn more about compression at:

https://brainly.com/question/14828391

#SPJ7

Answer:

Okay...In this case I suggest you use corn seed or beans seed

Explanation:

It should take about 6 weeks to see the Germination, until then continue watering it and giving it sunlight

The seed germination investigation during the students' summer vacation involves selecting various seeds (e.g., beans, peas, sunflower) and setting up an experiment. They will place the seeds in different conditions, like light vs. dark or wet vs. dry, and pot the same seed in multiple pots. Throughout the investigation, the students are expected to carefully observe and document the changes that take place over time, including the growth of roots and shoots. This hands-on approach allows them to gain practical knowledge of seed germination and develop essential scientific skills in observation, data collection, and documentation.