Answer:
D. Microglia
Explanation:
Microglia are phagocytic, which means that they are cells that can engulf other cells and particles. Microglia protect the CNS by engulfing foreign particles and bacteria. They act also as a clean-up crew that help remove dead cells. They are found in both the brain and spinal cord, which make up the Central Nervous System, or the CNS.
C . the square of the distance the separated them
A ecosystem productivity is a rate of generation of biomass.’’I know this because it states.”In economy productivity refers to the rate of generation of biomass in an economy.This shows that the economy its usually expressed in units of mass per unit.
Answer:
Multicellular organisms can be described as an organism which is made up of multiple cells. A unicellular organism is made up of only a single cell. Multicellular organisms are complex organisms as they are made up of more than one cell. Unicellular organisms are simple organisms as they constitute of only a single cell.
Examples of a multicellular organism include humans, elephants, bats, rats, cats etc.
Example of a unicellular organism is bacteria.
