Considering how the body is organized, give one reason why it is so difficult for scientists to build a heart. A)
The heart is a pump made of muscle and that is difficult to grow in the lab.

B)
Even if researchers build a heart, there is no guarantee that a person's body will accept it.

C)
Human hearts are not like any other animal hearts so there is not source for cells and tissues.
Eliminate

D)
The heart is made up of many different types of cells that are organized into different tissues.

Answers

Answer 1

Answer:

Answer:

I think that the correct answer for your question is D

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What dose the xylem do

Answers

Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Answer:

it helps in transport of water and minerals vertically(only in one direction)

Explanation:

What is the difference between a reptile and amphibian , thanks

Answers

A reptile is a mammal that lives on land with scales whereas an amphibian is a creature that lives in both land and water so has gills but grows lungs as it ages

A reptile is an animal who lives on land and lays eggs. They almost all have scales (if not all). Amphibians are animals who mostly of the time are animals born in the water and grow up to live on land and water. Gills get replaced with lungs, but there are some exceptions.

The number of different species living in a given area describes a habitat. a population. species diversity. genetic diversity.

Answers

this answer would be a population. hope it helps

Huge tunnels called burrows carry water into the dam to the fan-like turbines.True

False

Answers

True true true true true true maybe

If a rock has equal amounts of lead and uranium in it how old is the rock?

Answers

The answer is:

45 byo

Which part of the eye helps focus light rays on the retina?A.lensB.pupilC.scleraD.iris

Answers

Lens focuses light rays on the retina.

Further Explanation:

The eye is the sensory organ of the organism that allows it to see the object.

The eye consist of various part:

1. Sclera-Outer covering of the eyeball is tough and has white layer called as sclera

2. Cornea-The light enters the eye through it. It is the curved layer in front of iris and pupil.

3. Pupil-It controls the amount of light entering into the eye

4. Iris-it surrounds the pupil and regulates the amount of light passing into the eyes.

5. Lens-It sits behind the iris. It focusses light onto the retina.

6. Retina-It comprises of photoreceptors and blood vessel that nourishes the former. The two main types of photoreceptor:

a. Rods: It is responsible for night vision and are more sensitive to light.

b. Cones: It is responsible for color vision.

The eyeball is basically divided into two regions which are filled by the fluid. The two type of fluid found are

1. Aqueous humor: Is present across the space separating cornea and the lens.

2. Vitreous humor: Is present across the space separating the lens and the retina.

Learn more:

1. Learn more about heart brainly.com/question/7301375

2. Learn more about blood brainly.com/question/8168020

3. Learn more about bloodstream brainly.com/question/310282

Answer detail:

Grade detail: Middle school

Subject: Biology

Chapter: The sensory organ

Keywords:

Retina, sensory organ, eye, sclera, cornea, pupil, lens, rods, cones, aqueous humor, vitreous humor, light rays.

Final answer:

In the eye, it is the lens that focuses light rays onto the retina. The pupil, sclera, and iris have other functions relating to vision but do not focus light.

Explanation:

The part of the eye that helps focus light rays on the retina is the lens. The lens is situated behind the pupil and is responsible for directing and concentrating light onto the retina. This is how we are able to see the world clearly. Without the lens, images would not be focused properly on the retina, resulting in blurry vision. Thepupil,sclera, and iris play important roles in eye function, but they are not directly involved in the focusing of light rays onto the retina.

Learn more about Eye anatomy here:

brainly.com/question/34329682

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