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Stells [14]
2 years ago
6

I NEED ANSWER PLSSSS!!!

Biology
2 answers:
trapecia [35]2 years ago
8 0

Answer:

reflection I took the test

algol132 years ago
3 0
<h3>Answer:</h3>

C) reflection.

<h3>Explanation:</h3>

In the picture shown above, the incident ray is equal to the reflected ray. According to the law of reflection, the angle of incidence is equal to the angle of reflection. Therefore, the property of light shown above is a reflected ray.

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CR endurance is determined by a. the amount of oxygen the body is able to utilize per minute of physical activity. b. the length
Amanda [17]

Answer:

The answer is A.

Explanation:

The CR endurance that is given in the question, or cardio respiratory endurance, can be described as the heart's, the muscles' and the lungs' ability to be able to work together effectively through extended periods of physical activity and it can be determined by measuring the amount of oxygen that the body uses in a minute during the said physical activity.

I hope this answer helps.

5 0
3 years ago
What are valence electrons?
Ksivusya [100]

Answer:

D

Explanation:

The simple answer is the electrons in the outermost energy level.

Hydrogen has 1 electron in the outermost energy level.

Magnesium has 2 so this tells you that magnesium has a charge of 2

Oxygen has 6  oxygen has a charge of - 2

Fluorine has 7

For most elements, the electrons in the most outer ring determine the valence of the element.

Notice that the non metals work differently than the metals. Mg may have a charge of 2 and that is the number of electrons in the valence right.

Oxygen is a non metal it has a charge of - 2. It gets 6 electrons by subtracting the number of its charge from 8.

6 0
3 years ago
Read 2 more answers
A ______________ is a change in matter in which the substances that make up the matter change into other substances that have ph
Eduardwww [97]

Answer:

chemical change.

Explanation:

There are two types of changes in matter: physical change and chemical change.

physical change- it is a change in matter that alters only its physical properties or its physical appearance. This type of change is reversible. For example- freezing of water, the water turns into solid ice and it can be reversed by melting the ice.

chemical change- it is a change in matter that alter its chemical and thus its physical properties. Most chemical changes are irreversible. for example- burning of paper, results in black soot and ashes- Thus changing both physical and chemical properties.

7 0
2 years ago
The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours. What is the popul
kkurt [141]

Answer:

The population is people who buy mystery novels at that specific book store.

6 0
2 years ago
How do scientists study pollen grains to help them understand climate change ?​
Kipish [7]

Answer: by analyzing and making inferences about them

by observing and listing facts about them

by studying and reading more about them

by inspecting them and sharing findings with other scientists

7 0
3 years ago
Read 2 more answers
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