A specific example of how light year is used in space exploration. Pick one object in space (the nearest star, the nearest galaxy, the edge of the universe, etc.) and tell how far this object is from earth and how long it would take light to travel there.

Answers

Answer 1
Answer: Andromeda is the nearest galaxy that 2.5 million light years away from earth.

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Given the picture below, which plate would be experiencing daytime in the winter?

Answers

Answer: Plate C

Explanation: In the picture, we can observe that the northern hemisphere experiences winter, whereas the southern hemisphere experiences summer. It is because the tilt of the earth is facing away from the sun in the northern hemisphere and the tilt is facing towards the sun in the southern hemisphere.

In the winter experiencing northern hemisphere, the plates L, K and J are having night time. But plate B, C and D are having daytime.

Here, plate D is region experiencing both the effects of summer and winter as it is in the equatorial zone. So it will not be fully considered to be experiencing winter.

Therefore, the plate C is the region that experiences daytime during winter.

A.)Plate C
I hope this helps you

PLEASE HELP I'll MARK THE BRAINLIEST1.) A vessel that carries oxygen-rich blood to the heart muscle is called a(n): *

A.) Coronary Artery

B.) Vein

C.) Ventricle

D.) Atrium


2.) A group of cells that receives messages about the body's oxygen needs and sends out signals to adjust the heart rate is called the: *

A.) Atrium

B.) Lymph Node

C.) Valve

D.) Pacemaker


3.) Blood components that helps the body control bleeding are: *

A.) Hemoglobin

B.) Red Blood Cells

C.) White Blood Cells

D.) Platelets


4.) Plasma is mostly composed of: *

A.) Blood Cells

B.) Water

C.) Proteins

D.) Hemoglobin


5.) Which of the following is NOT a characteristic of a vein? *

A.) Valves prevent backward flow of blood

B.) Returns blood to the heart

C.) Walls are one cell thick

D.) Walls are generally thinner than those of arteries


6.) The largest artery in the body is called the: *

A.) Aorta

B.) Atrium

C.) Pacemaker

D.) Coronary Artery


7.) The network of vessels that returns fluid to the bloodstream is called the: *

A.) Lymphatic System

B.) Veins

C.) Arteries

D.) Circulatory System


8.) Hemoglobin is a protein that binds easily to: *

A.) White Blood Cells

B.) Oxygen

C.) Fibrin

D.) Platelets


9.) Which of the following structures pumps blood into arteries leading to the lungs? *

A.) Right Atrium

B.) Left Atrium

C.) Right Ventricle

D.) Left Ventricle


10.) Which of the following structures is NOT part of the cardiovascular system? *

A.) Heart

B.) Blood Vessels

C.) Brain

D.) Blood


11.) True/False: The force of the heart's contracting atria causes blood pressure. *

A.) True

B.) False


12.) True/False: Capillary walls must be very thick to withstand the high force of blood pumped by the heart. *

A.) True

B.) False


13.) True/False: White blood cells defend the body against disease. *

A.) True

B.) False


14.) True/False: Blood travels in two directions in the body. *

A.) True

B.) False


15.) True/False: Blood types are determined by proteins known as marker molecules that are on red blood cells. *

A.) True

B.) False


16.) Fill in the Blank: The right and left __________________ are the two lower chambers of the heart. *


17.) Fill in the Blank: A sphygmomanometer is an instrument that measures ____________________________. *


18.) Fill in the Blank: A flap of tissue that prevents blood from flowing backward is a(n) ______________. *


19.) List two of the three main roles of the cardiovascular system: *


20.) Tell me anything else that you learned in science about the cardiovascular system:

Answers

Answer:

Answers:

1.)- Coronary Artery

2.)- Pacemaker

3.)- Red Blood Cells

4.)- Water

5.)- Walls are one cell thick

6.)- Aorta

7.)- Lymphatic System

8.)- Oxygen

9.)- Right atrium

10.)- Brain

11.)- False

12.)- True

13.)- True

14.)- False

15.)- True

16.)- Ventricles

17.)-  Blood pressure

18.)- valve

19.) The cardiovascular system consists of the heart, blood vessels, and blood. This system has three main functions: Transport of nutrients, oxygen, and hormones to cells throughout the body and removal of metabolic wastes (carbon dioxide, nitrogenous wastes).

20.) Random Facts:

The average heart is the size of a fist in an adult.

Your heart will beat about 115,000 times each day.

Your heart pumps about 2,000 gallons of blood every day.

Explanation:

:3 took a long time but ya

Answer:

coronary arteries

Oxygen is supplied to the heart muscle by the coronary arteries. These are the blood vessels that wrap around the surface of the heart: The left main coronary artery branches into the: Circumflex coronary artery, which supplies blood to the back left side of the heart

On which axis will u place the names of the planets?

Answers

I don't quite understand what you're asking here. A Planet's axis and its name have nothing to do with each other from my understanding.

Choose all the answers that apply.Which of the following increases erosion?
clearing forests
leaving fields unplanted
careless farming
contour plowing
crop rotation
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Lost soil nutrients can be replaced through _____.
contour plowing
recycling
crop rotation
erosion

Answers

the first one is contour plowing

Answer:

First one is

-careless farming

-leaving fields unplanted

-clearing forests

And the second is

-crop rotation

Explanation:

Water harvesting, the collection of rainfall and run off for future use, has been practiced throughout the far east for thousands of years. This method helps in both water and land conservation, but this method is only practical in semi-arid and mountainous regions. Where in the United States could this method be used with success?

Answers

The answer is B) Rocky Mountains
Utah, New mexico, arizona, colorado

Location of Tonoplast

Answers

A tonoplast is a membrane that surrounds the vacuole of a plant cell.