Answer: The phosphate group has the chemical composition 
.
Explanation:
A phosphate group is a group where one phosphorus atom is attached to four oxygen atoms.
The oxygen atoms are attached to the phosphorus atom via single bond and one oxygen atom is attached to the phosphorus atom via double bond.
The chemical formula which represents a phosphate group is .
Thus, we can conclude that phosphate group has the chemical composition .
In general, it is not true that Ecology focuses on how human activities affect an ecosystem and ways to mitigate resulting issues, since this is not the primary focus of the field.
Vacuoles are storage organelles that are found in both animal and plant cells. They store food or any other forms of nutrients, they also store waste products so as to protect the contamination of the cell environment. These waste products are sent out of the cell via vacuoles. In plants the vacuoles are larger than in animals. The vacuole provides plant nourishment in the scarcity of water in the external environment hence, prevents the wilting of plants.
1) all of these are examples
2) nitrogen fixation
3) No, they can only assimilate nitrogenous compounds in the soil.
