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agasfer [191]
3 years ago
13

Nitrogen is often the limiting nutrient for which group of organisms ?

Biology
1 answer:
Georgia [21]3 years ago
6 0

Answer:

I'm not really certain about this but my answer would be (a)

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Describe how a person's activity level can affect their health
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It really can. Just trust me!

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3 years ago
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The meselson-stahl experiment supported which mechanism for dna replication? see section 15.2 (page 320) .
Arte-miy333 [17]
Answer;
DNA replication is semi-conservative.
The meselson-stahl experiment supported the hypothesis that DNA replication is semi-conservative.

Explanation;
The Meselson-Stahl experiment
was an experiment by Meselson and Stahl that proved that the semi-conservative model by Watson and Crick was correct. 
DNA replication is semi-conservative in the sense that the new helices formed after replication contain, one new DNA strand and one old strand from the parent DNA molecule.
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3 years ago
did Anna appear to be following a diet appropriate for a person with type 1 diabetes and why or why not
Sphinxa [80]
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5 0
3 years ago
Four examples of the effects of environmental change are given. Match each one with the type of environmental change it demonstr
enyata [817]

Answer:

The answers are matched as follows:

African forests have been hunted to near extinction levels to obtain ivory-------------->human exploitation

The eruption of mount Saint Helens destroyed some populations of conifers------> natural disasters

An infection with a fungus reduced the population of North American Elm trees ----> disease

Increasing global temperatures have altered migration patterns of humpback whales ------>climate change

8 0
3 years ago
The process in which brain connections which are repeated become covered and insulated with a layer of fat increasing the effici
fiasKO [112]

Answer:

Myelination

Explanation:

Myelin is a fatty substance composed of lipids which surrounds the axons of the nerve cells in the central nervous system. The myelin is formed by the oligodendrocytes in CNS and Schwann cells in PNS.

The plasma membrane of the oligodendrocytes containing the myelin covers the axons of the neurons in spiral fashion thus proving a sheath around through the process called "myelination".

This myelin sheath protects the neurons from the external environment as well as insulates the neuron which increases the efficiency of the impulse.

Thus, Myelination is the correct answer.

6 0
3 years ago
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