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Georgia [21]
1 year ago
7

Which force acts when one object moves against another object?

Biology
1 answer:
Marianna [84]1 year ago
3 0

Answer:

Explanation:

Answer: C, Friction

Which force acts when one object moves against another object?

Friction

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Chapter 1: Introduction: Evolution and the Foundations of Biology 1. _______ DNA is composed of building blocks called _____. a.
irina [24]

Answer:

C. Nucleotides

Explanation:

Nucleic acids are macromolecules which are polymers of nucleotides. There are two types of nucleic acids namely: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleotides are the building blocks of nucleic acids.

A nucleotide is made up of three components:

- A phosphate group

- A five carbon sugar called pentose sugar. In RNA the sugar is ribose sugar and in DNA the sugar is deoxyribose sugar.

- Nitrogenous bases: There are four different types of bases in DNA: adenine, guanine, cytosine and thymine. In RNA thymine is replaced by uracil. Adenine and guanine are purines whereas cytosine, thymine and uracil are pyrimidines.

Nitrogenous base and sugar together are called nucleoside and when phosphate is also attached then it is called nucleotide.

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2 years ago
Someone plss help plss helppp plllsss<br><br> Will mark brainliest
Sedaia [141]

Answer and Explanation:

An acid has a pH that is less than 7.  A base has a pH that is greater than 7.  Something that has a pH of 7 is neutral, but since it doesn't seem that the question is asking about neutral, you can ignore that for this problem.

Situation 1:   Base

Situation 2:  Acid

Situation 3:  Acid

Situation 4:  Base

Situation 5:  Acid

Situation 6:  Base

A.  Water directly out of the tap has a pH of 7.2.  When you add carbon dioxide (blow into the water), you get a pH of 5.1.  This means that the addition of carbon dioxide makes water more acidic.

B.  The most basic solution will have the highest pH.  This means that it will be water with bleach added to it.

C.  The most acidic solution will have the lowest pH.  This means that it will be water with instant coffee.

7 0
3 years ago
Why do we drink water?
frez [133]

Answer:

To survive. Drinking is very important and is required for animals and organisms to survive. It also keeps us hydrated.

8 0
3 years ago
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What is used to break down glucose into atp
GrogVix [38]
Here is a hint, mitosis is the division of cells. 
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2 years ago
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Fill in the blanks to complete the sentences about why Earth's atmosphere is important to living things. Earth's atmosphere prov
deff fn [24]

Answer:

Earth's atmosphere filters out harmful radiation from the sun.

Explanation:

The sun is earth's star and sunlight helps light up and warm the earth and also helps in the process of photosynthesis. Sunlight on the other hand, produces harmful rays called Ultraviolet radiation or UV rays.

These ultraviolet radiation is dangerous to our skin and ultimately our body as a whole. Fortunately for us, the earth's atmosphere has a protective layer called the Ozone layer. The Ozone layer serves to filter out and block the harmful ultraviolet radiation and prevent it from reaching the earth, thereby protecting us.

Sadly though, the Ozone layer is getting depleted by human activities which emit harmful gases like carbon dioxide into the atmosphere. Activities such as oil drilling, automobile emissions, destruction of forests etc. These activities affect the Ozone layer leading to it's gradual disappearance and letting in the harmful UV rays. A phenomenon referred to as global warming.

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