Over time, those who cannot live through the temperature differences/have undesirable qualities will die off. Overtime, those with desirable qualities are left and they will continue the population.
Most of the marine animals have a stream lined body, which means, they have a sharp and pointed at the front. The pointed front of the organism allow to cut the resistance of the water. In case, the body is not pointed at the front and it is blunt, the water current and flow would resist the movement of the organism further. So, for the locomotion purpose, it is important to have a streamlined body. Further smooth and hair less body also decrease the resistance during the movement in the water.
Classification of living things takes into consideration of everything, except A. The number of cells the organism is found to have.
Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
Three reasons a species could become extinct include, deforestation, being overhunted, not enough food available.
