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MrRissso [65]
4 years ago
8

Friction reduces work accomplished by machines. True False

Biology
1 answer:
bekas [8.4K]4 years ago
7 0
It is True I hope it helped :DGo subscribe to king kevin on youtube if you can and leave a like on the newest video thank you.
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What's the main characteristic of porosity?
aev [14]

Answer:

The answer should be D

Explanation:

because poroslty of a rock is a measure of its ability to hold a fluid. mathematically, it is the open space in rock divided by the total rock volume.

6 0
3 years ago
How would you explain the “density of the elephant population” to someone?
cricket20 [7]

Answer:

The most effective experimental approach to assess the effects of elephant impact on vegetation is to assess plant responses under differences in elephant density. It is important that other factors, such as soils or habitat structure are held constant so that the only factor which varies is elephant density.

Explanation:

source: Studying Elephants icun.org

7 0
4 years ago
A person's blood type is determined by the:_______
matrenka [14]

Answer:

) Presence of specific glycoproteins on the cell membrane

Explanation:

When specif glycoproteins(antigens)  or antibody are present on a cell membrane of Red blood cell,they can  be used to identify the blood type.Antigens are substances capable of triggering an immune response in a cells.

In addition,they function in transport of molecules across the RBC. They help in the maintenance of the RBC,and aiding the arrest of cells capable of causing diseases to the body.

Therefore,they are good determinants of blood types,based on this two types of antigens present in a  blood type.

These two antigens  used for classification of blood types are the 1-the ABO antigens 2,the Rhesus antigens.

Essentially,when a WBC produces an antibody ,which is a molecule that defends the body,If this is not compatible,the antibody will recognize it as a foreign body and attack it.Thus such blood types are not compatible. Thus the antibody-antigen reaction are good for knowing and classify blood types.

Antigen can also be glycoprotein,carbohydrate or glycolipids.

Generally blood types are inherited from both parents.Therefore the antigen present on the RBC are combination of the alleles from each parent.

4 0
3 years ago
What is the process by which genetic material is copied?
Pepsi [2]
I would think it’s DNA replication
Hope that helped
Sorry if it’s wrong
6 0
3 years ago
What kind of relationship would lions and hyenas have? predator-prey / symbiotic / competitive
LUCKY_DIMON [66]

Answer: Competitive

Explanation: They don’t hunt each other nor benefit from each other’s existence. Therefore, it’s most likely they compete for prey and survival.

5 0
3 years ago
Read 2 more answers
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