D. The initial breakdown of glucose to pyruvic acid. It's the first step of cellular respiration, and also happens to be an anaerobic stage. Hope this helps! :)
Using photosynthesis. They convert sunlight into energy. They eat algae.
Answer:
The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.
Explanation:
None needed.
Explanation:
sorry, I may use old terms; I believe it is at the hypothalamus, for endocrine system...
Answer:
D
Explanation:
Rejection of a newly translated organ caused by development of cancerous cells in the organ
