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wel
2 years ago
13

What was Anton van Leeuwenhoek’s contribution in the development of cell theory? A. He built the first compound microscope. B. H

e was the first to observe live cells in a sample of pond water. C. He concluded that cells exist in liquids. D. He stated that all living things are made of cells.
Biology
1 answer:
Vesna [10]2 years ago
5 0

Answer:

B. He was the first to observe live cells in a sample of pond water.

Explanation:

He was a self taught man that created the first microscopes which allowed him and others to see tiny organisms.

The other answers are not correct as Hans made the first microscope, cells existing in liquids were not a critical part of micro biology, and it was Schlieden and Schwann who created the cell theory that stated that all living things were made of cells.

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3 years ago
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Why would farmers plant alfalfa that has less economic value
arlik [135]

answer:

because it benefits the soil. the long alfalfa stand life also gives the soil a chance to rest from frequent field crop rotations, helps provide nitrogen for subsequent crops, and improves soil tilth. this helps prevent pesticide and sediment movement to natural waterways.

good luck :)

hopefully, this helps

have a great day !!

8 0
3 years ago
What is the definition of energy
Aleksandr [31]
The ability to do work.
7 0
3 years ago
A respiratory rate of less than ________ and greater than ________ in cases of trauma are criteria for immediate transportation
vovikov84 [41]

The question is incomplete as it does not have the options which are:

A. 8; 32

B. 10; 29

C. 12; 20

D. 5; 45

Answer:

The correct answer will be option-B

Explanation:

Trauma is the experience caused by the life-threatening events or events which help develop the psychological distress conditions.

The trauma can cause changes in the physiologic and psychological responses in humans. The CDC guidelines have stated criterion for immediate transportation of the person to the trauma centre in which one of the criteria is that if a person has the respiratory rate of less than 10 and greater than 29 will be transported to the trauma centre immediately.

Thus, Option-B is the correct answer.

8 0
3 years ago
What determines the composition of the soil?
denis-greek [22]
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