Sunlight. Based on the sunlight you receive you have three zones.
1. Sunlight zone- There is enough sunlight here and photosynthesis can happen. More than 90% of marine animals live in this zone.
2. Twilight zone- A small amount of light is here and no plants grow here. The fish who live here are the ones who have adapted to the little light. Lantern fish is an example.
3. Midnight Zone- 90% of the ocean is in this group. It is entirely dark and the temperature is freezing.
Answer:
The correct answer is option D) selective breeding.
Explanation:
Selective breeding is a process in which human selects a particular organisms for breeding purpose to avail a specific characteristics in the offspring which is present in the organisms that are used for breeding. For example, if a person wants a cow that produces high amount of milk so it can breed the local cow with male of high milk producing specie. So the calf which is formed have the characteristics of high milk producing specie.
In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)
