Dwarfs: B
Giants: C
Main sequence stars: D
Supergiants: A
Hope this helped
Answer:
1. cytoskeleton
2. Golgi apparatus
3. smooth endoplasmic reticulum
4. nucleolus
5. nucleus
6. Rough endoplasmic reticulum
7. ribosomes
8. chlorophyll
9. vacuole
10. mitochondrion
11. cytoplasm
12. adjacent cell wall
13. plasma membrane
14. outer layer (cell wall)
When using the term 'life form' I assume you are speaking of animals, bacteria, etc. Scientists take years to find their desired conclusion because of how the environment tends to change quite frequently (Depending on where the creature lives). The earth is constantly revolving and rotating, which causes changes in the environment. These changes affect the animals behavior, eating habits, and overall chances of survival. A factor that must also be considered is that scientists have to examine these creatures in their natural habitat which can be an issue depending on where they live. For example, if I were to study the behavioral patterns of a Leopard, it would be extremely difficult to do so because the Leopards are specifically keen at camouflaging in their environment. That would make observing its behavioral patterns very frustrating and time consuming. In a way, mother nature is always against us.
(Hope this helps)
Answer:
The correct answer will be - Keystone species
Explanation:
Keystone species refers to the species present in a community which has a large effect or great influence on the surrounding environment.
The concept of Keystone species was introduced by the Robert T. Paine in 1969 to the species which help maintain the structure of the biological community.
The keystone species are called keystone species as its presence affect the other organisms directly and if removed from a community it will lead to the shift or change in the structure of the community.
Thus, Keystone species is the correct answer.