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GREYUIT [131]
3 years ago
12

Describe the role of a decomposer in a food web.

Biology
1 answer:
Zarrin [17]3 years ago
4 0
Decomposers break down decaying matter and give special nutrients to the soil so the food web can continue.
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Suppose a new mutation that improves metabolic efficiency is lost from a small population of mammals living in a region of seaso
Troyanec [42]

Answer:

C) genetic drift.

Explanation:

Genetic drift is the random change in the frequency of alleles in a population due to random sampling. Many circumstances can lead to genetic drift for example bottleneck effect, founder effect, etc.

The bottleneck effect occurs when most of the members of a population die because of any natural disaster like flood, fire, etc. This can cause a certain allele to be lost in the remaining population because of losing major populations. So here due to hurricane half of the mammal population gets eliminated which shows it is an example of the genetic drift.

4 0
3 years ago
Research this week will be done over the Nervous System
erik [133]

Answer:

The major organs of the nervous system are the brain, spinal cord, sensory organs, and all of the nerves that connect these organs together.

The nervous system reacts to the presence of danger(instinct), stores memories, control the 5 senses, and commands the rest of the organ systems to maintain homeostasis.

The nervous system works together with the respiratory system, the circulatory system, the muscular system, and many more.

8 0
3 years ago
Why is dna replication said to be semi-conservative
Neko [114]

During DNA Replication, the DNA molecule unzips itself so that there are two free strands of DNA. Both of those strands then create new complementary strands of DNA. Thus every subsequent generation of DNA uses one of the parent cell's strand of DNA as a template, which is why DNA replication is said to be semi-conservative. Hope this helped!

7 0
3 years ago
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secrete
Inga [223]

Answer:

positive feedback

Explanation:Because when you get motion that means its positive but if doesn't feel motion than that is negative.

6 0
3 years ago
Which of the following statement is true of a semi-conservative model of replication?
Ratling [72]
Answer - A
Semi-conservative model of replication involves the replication of DNA in all the familiar cells in such a way that each newly synthesized daughter cell contains a double helix with one new strand and one old strand.

4 0
2 years ago
Read 2 more answers
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