The Central Nervous System is made up of the brain and the spinal cord.
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system.
POND
ROCKS
MOUNTAINS
DEAD ANIMALS PLANTS AND WASTES ARE NOW ABIOTIC FACTORS
<span /><span>
-The mutation could make it easier for an organism to obtain food.
-yes, a correct anwer!
-The mutation could make an organism need more food.
-no, this would make it harder for the organism to survive
-The mutation could improve the organism's sight.
-yes! better sight means more information, which is beneficial
- The mutation could let the organism run faster.
-running faster means advantage over pray and predator - also a correct answer
so all are correct except on the second one.
</span>
I would choose the option D.
D. It remains tightly coiled at the G1 phase.