PLEAS HELP 50 POINTS
Which of these is a function of the placenta?
A. To store the embryo's wastes

B. To hold the fetus upside down for birth

C.To digest food for the fetus

D. To bring oxygen to the embryo's cells

Answers

Answer 1
C. Digest food for the baby

Related Questions

2. A car salesperson claims that a 300-hp engine is a necessary option in a compact car, in place of the conventioNl 130-hp engine. Suppose you intend to drive the car within speed limits (# 65 mi/h) on flat terrain.
How would you counter this sales pitch?

Answers

Hope this answer works for you:)

Why is sunlight important to all aquatic ecosystems?

Pick a answer
---------------------

A. Sunlight allows fish to see their surroundings, even at depth.

B. All of the other answer choices

C. Aquatic producers need sunlight to make food and release oxygen.

D. Aquatic organisms cannot carry out life processes in the dark.

Answers

Answer:

Sunlight stimulates the growth of phytoplanktons which belong to the first trophic level in an aquatic ecosystem pyramid. If these do not exist, aquatic ecosystem would also disappear.


Which is an example of kinetic energy?

Answers

Answer:

Running

Explanation:

Running is kinetic energy because you are using force to run and running is an action.

Hope It Helps

Running ,walking anything that moves really

Which of the following correctly describes Photosynthesis?

Answers

Answer:

Photosynthesis is a plant that uses sunlight, water, and carbon dioxide to make sugar and oxygen.

What were the results of the experiment done by Dr. Tierno?

Answers

Answer:

There were many different microorganisms on the pillows. Dr. Tierno stated that these germs were probably causing the kids to have allergy symptoms.

I hope that answers your question

When should most agricultural crops be fertilized?
A In the spring
B. In the fall
C. In midsummer
D. Throughout the growing season​

Answers

Answer:

A

Explanation:

in the spring

Fertilizer is most effective when used on plants at their peak growing cycle.

Hi there !
Why is biodiversity important ?
Thank you

Answers

Answer:

Biodiversity is necessary for all species on Earth, including humans, to function properly. We cannot have healthy ecosystems that give us with the air we breathe and the food we consume without a vast range of animals, plants, and microorganisms.

Explanation:

Answer:

Biodiversity is essential for the processes that support all life on Earth, including humans.

Explanation:

A salmon is genetically modified in a laboratory by inserting one gene into one chromosome of a homologous pair. The salmon escapes, and breeds with a wild, unmodified salmon. Would you expect all of the offspring to be genetically modified? Explain your reasoning.

Answers

Answer:

no

Explanation:

only some of the genes would replicate into the offspring. genes from the modified salmon would mix with the genes of the non modified salmon

name the nucleus of the thalamus for conscious sensation

Answers

Explanation:

Relaying limbic sensory and motor signals to the cerebral cortex, Regulating consciousness,sleep, alertness


Describe the structure of the digestive system.

Answers

Answer:

[tex]\bold{Structure \: of \: digestive \: system}[/tex]

The digestive system is made up the GI tract or digestive tract and the liver, pancreas, and gallbladder.The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.

The small intestine has three parts :

The first part is called the duodenum. The jejunum is in the middle the ileum is at the end. The large intestine includes the appendix, cecum, colon, and rectum. The appendix is a finger-shaped pouch attached to the cecum. The cecum is the first part of the large intestine. The colon is next. The rectum is the end of the large intestine.

Marcie feeds her dog 98 ounces of dog food each week. She has 6 pounds of dog food.

Does she have enough dog food to feed the dog for a week? How many ounces of dog food does she have?

Answers

Answer:

She does not have enough for a week. Marcie has 96 ounces.

Explanation:

6 pounds is 96 ounces. Since she needs 98 ounces, she does not have enough for a week.

Life ORientation project 2021 task 2

Answers

A life orientation refers to a subject studied in Grade 7-9 of South-African Schools.  The purpose is to give students in school orientation on how they ought to behave in life and society.

What are the topics in Life Orientation?

Some of the topics you'd typically find in Life Orientation are:

Goal settingHealth, social and environmental responsibilityconstitutional rights and duties etc.

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Metals in streams and rivers cause a pH that is so low that they ____.

A: Cause plants to grow well
B: Easily support many types of aquatic life
C: Cannot support sensitive populations of aquatic organisms
D: Encourage nutrient uptake by living organisms

Answers

Answer: C

when the pH level is very low in streams and rivers, they are inhospitable for many organisms

1. Which structure is found in all animal cells?

Answers

Question:- Which structure is found in all animal cells?

Answer :- Centrioles

Explanation:-

They are barrel shaped cell organelles only found in animal cell There function is to help in division of cell membrane by forming microtubules which help in division of chromosomes ( spindle fibres) They play role in arranging microtubules which act as endoskeleton of the cellThey also help in formation of cell structure like cilia and filaments

Explanation:

The cell containing eukaryotic cell enclosed by plasma membrane and containing a membrane bounded both nucleus and organelles

is water capable of chemical weathering
?​

Answers

Answer:

no no no no no no no no no no no no

Water, and many chemical compounds found in water, are/is the main agent of chemical weathering.

Which is defined as a cell structure made of DNA that gives all of the master instructions for the cell?

Answers

The Nucleus is the cell structure that contains chromosomes which hold the genetic information of the individual.

What do you mean by DNA?

DNA stands for Deoxyribonucleic acid. It is one of the most common types of genetic material in most organisms. It is found in both forms single-stranded or double-stranded.

Chromosomes are made up of tightly coiled DNA and consist of proteins known as histone proteins and provide all the master instructions to the cells.

Therefore, the chromosome inside the nucleus is the cell structure made of DNA that gives all of the master instructions for the cell.

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How does natural selection contribute to the theory of evolution?

Answers

Answer: Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.

Explanation:

what type of material is the cell membrane made of

Answers

Answer:

They contain a variety of biological molecules, notably lipids and proteins.

Explanation:

If the water temperatures increase in the estuary, oxygen levels would _____.
A: decrease
B: increase
C: stay the same

Answers

Increase it would increase ocean levels do to melting and global warming

3/ The trophic levels in ecosystem are labeled as A, B and C
3
Heat
Heat
B
A
Consumers
Sun
Producers
с
Decomposers
Inorganic
Nutrient
Pool
Heat
Which option is correct about the trophic levels?
A The Chas more energy available to it than the B. B. The C uses cellular respiration to obtain energy.
C. The A builds simple compounds from complex D. The B are the most essential components of the
units
ecosystem

Answers

Answer:

Explanation:

3/ The trophic levels in ecosystem are labeled as A, B and C

3

Heat

Heat

B

A

Consumers

Sun

Producers

с

Decomposers

Inorganic

Nutrient

Pool

Heat

Which option is correct about the trophic levels?

A The Chas more energy available to it than the B. B. The C uses cellular respiration to obtain energy.

C. The A builds simple compounds from complex D. The B are the most essential components of the

Rainbow trout live in the rivers and streams of upstate New York. Rivers in this area are cold and have strong currents. If temperatures fall over time because of climate change, what is one variation that would likely help the trout to survive? Why? Write 1-2 sentences.(2 points)

Answers

Tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.

Which factor help the trout to survive?

If temperatures fall over time because of climate change, the tolerance towards cold temperature is the one variation that would likely help the trout to survive because only those organisms survive in cold temperature that have good tolerance and various adaptation towards cold temperature.

So we can conclude that tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.

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It is necessary to have limitations in an environment because if not:
Traits from species would get crossed.
Water and shelter would be automatically created by extra species that are new.
The populations of the world would soon crowd one another out and make conditions unlivable.
The world would balance itself out without problems.
animals.
Plants would take over the space of animals

Answers

Best guess is "The populations of the world would soon crowd one another out and make conditions unlivable."

Almost 225 soccer fields can fit in one square mile . Approximately how many could you have to yourself if you lived in a region containing 25 people per square mile ? Or 100 people per square mile ?

Answers

(a) The size of the soccer field you can have to yourself if you leave in a region containing 25 people per square mile is 9 fields.

(b) (a) The size of the soccer field you can have to yourself if you leave in a region containing 100 people per square mile is 2.25 fields.

Size of soccer field to yourself

The size of the soccer field you can have to yourself if you leave in the given regions is calculated as follows;

For 25 people per square mile

Size per person = (225 field/mi²) / (25 persons/mi²)

Size per person = 9 field per person

For 100 people per square mile

Size per person = (225)/100

Size per person = 2.25 field per person

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Which statements describe situations where organisms interact and depend on each other for survival?

Choose all correct answers.

1. Tree frogs use plants as protection from predators. The plants receive nothing from the tree frogs.

2. Zebras eat grass, Zebras spread the grass seeds to new locations in their droppings as they move with their herd.

3. Birds find shelter in trees as they build their nests and raise their young. Birds also eat the fruit on trees and then spread the seeds to new places in their droppings.

4. The oxpecker feeds on the insects that surround the rhinoceros, The rhinoceros has fewer bugs surrounding it.

Answers

Answer:

Predation is an interaction in which one organism, the predator, eats all or part of the body of another organism, the prey.

Herbivory is a form of predation in which the prey organism is a plant.

Predator and prey populations affect each other's dynamics. The sizes of predator and prey populations often go up and down in linked cycles.

Predators and prey often have adaptations—beneficial features arising by natural selection—that are related to their interaction. For prey, these include various defenses and warning signals, such as bright coloration.

Explanation:

Choose the molecule that is most concentrated at each ph ?

Answers

I don’t have my notes on me but I’m assuming this questions has to do with the H+ concentration in each compound. The more H+ molecules in a solution, the more acidic it is, the lower it’s pH is. So for the low pH of 4 (most acidic), H2CO3 is the most concentrated since there are the highest number of H+ ions per molecule. For the medium pH of 7 (neutral), HCO3- is most concentrated. For the high pH of 10 (basic), CO3^2- is most concentrated because there are the least number of H+ ions, in this case, none at all.

The plants in this ecosystem are dark in color to absorb sunlight, covered in hair and grow in clumps. What type of ecosystem could a plant with these
adaptations be best fit for?

Answers

Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time. So it could be tundra ecosystem according to the given scenario.

What is tundra ecosystem?

Tundra ecosystems are treeless areas found in the Arctic and on mountain peaks where the climate is cold and windy and rainfall is scarce.

Much of the year, tundra lands are covered in snow, but summer brings bursts of wildflowers.

Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time.

Thus, the correct ecosystem for the given condition is tundra.

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Help me plsssssssssssssssss​

Answers

Answer:

Planet A is Venus

Planet B is Saturn

Explanation:

Planet A 0.72 AU which Mars and Uranus arent. Also Planet A doesnt have rings eliminating Saturn. This means that the answer for Planet A is Venus

(BTW, Planet B is Saturn, in case it asks you in a later question)

Hopefully this helped you!

the answer should be venus

Red apple weighs 245grams green one weighs 167grams which one more attracted to the earth

Answers

The Apple that wheighs more is the one that attracts to the earth more

Answer:

the Red apple weighs is more than the green one soo,the Red apple is more attracted to the earth

What are the differences between a roundworm and annelid?​

Answers

Answer:

Annelids are segmented worms whereas roundworms are not segmented. Further, annelids have a true coelom while roundworms have a pseudocoelom. This means annelids have a well-developed mesoderm while roundworms lack a mesoderm.

what is a factor that affects soil development.
a. Time
b. Slope
c. Type of rock
d. all of the above
Please select the best answer from the choices provided

Answers

Answer:

D) All of The Above

Explanation:

depending on what type of soil, it could take longer or shorter for it to develop properly. The slope can cause certain parts to develop better than. others as well.

hope that helps

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