Answer:
Rocks or lava
Explanation:
In 1° succession there is no soil.. And the process of soil formation take very long time.
In 1° succession rocks or lava is present and lichens, soil erosion, wheathring of rocks helps in soil formation.
Answer: Every species has a carrying capacity, even humans. However, it is very difficult for ecologists to calculate human carrying capacity. Humans are a complex species. We do not reproduce, consume resources, and interact with our living environment uniformly.
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Answer:
An example of endoparasitic relationship is of a tapeworm living in the intestine of an animal.
Explanation:
Parasites are one type of organism that stays and grows in the body of another organism and causes harm to it. They prey on the body of the host. Parasites are of various types. One of which is the endoparasite, that resides in the body of the host organism and feeds on its body.
This long term relationship of a parasite and the host is called Parasitism. One such example of endoparasite is a tape worm that lives in the body of an animal and feeds on it causing harm to it.
Answer: 28%
Explanation:
Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio
21% Adenine and 21% Thymine
21% + 21% = 42 100 - 42 = 56 56 / 2 = 28
28% Cytosine and 28% Guanine