Answer:
I think the answer is
D. The planet is extremely hot.
Explanation:
It's because there is no water left on the surface, which helps cooling down the planet and the atmosphere contains thick and excessive carbon dioxide which traps the heat, causing the planet to heat up.
Answer: because the interactions between these organisms enable the cyclic flow of energy and nutrients in the ecosystem.
Explanation:
1. Pedigrees
2. Uppercase
Lowercase
Answer: B-cells fight bacteria and viruses by making y-shaped proteins called antibodies, which are specific to each pathogen and are able to lock onto the surface of an invading cell and mark it for destruction by other immune cells. C-cells are a virus-bound antibody that binds to receptors, on the surface of phagocytic cells and triggers a mechanism known as phagocytosis, by which the cell engulfs and destroys the virus.
Explanation: sorry this answer was not simple at all -_-
