Answer:
it spanned between 66 million years ago and 56 milion years ago
Explanation:
I hope htis helped!
A phosphate group is a functional group that typically has a negative charge at the pH of the cell.
- Phosphate groups contain a negative charge at physiological cell pH.
- DNA nucleotides are composed of a phosphate group, thereby exhibiting a negative charge.
- The phosphate group is also fundamental in Adenosine triphosphate or ATP (the energy coin of the cell).
In conclusion, a phosphate group is a functional group that typically has a negative charge at the pH of the cell.
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Answer:
D) the frequency of rainfall needed for the germination of desert plant seeds
Explanation:
When we talk about abiotic factors, we refer to the non-living factors. The abiotic components of an ecosystem include: Water, air, temperature, light, and the like.
So if we consider it as a limiting factor to population size, this should be the cause of the limitation.
Among all the choices, only D, shows an abiotic factor being the cause of population limiting. Rainfall is an abiotic factor (water), which influences the germination of desert plant seeds, specifically, it depends on the frequency of rainfall.
