Which of the following is not an advantage of renewable energy? a. Reduce pollution
b. reduce greenhouse gas emissions
c. Reduce biodiversity losses
d. Reduce profits for oil and gas companies

What's the waste product of electrons and pyruvate combining in fermentation?  

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood