Efferent nerve any nerve that carries impulses from the central nervous system toward the periphery, such as a motor nerve
Answer: Single cell organisms dont need a respiratory system because oxygen and carbon-dioxe diffuses between their body tissues and the enviorment.
Answer:
carbon dioxide
Explanation:
it is essential to living organisms but it can be dangerous because it is generated by fossil fuel combustion and deforestation
the greenhouse gas, methane, is released by cattle as a product of their metabolism. what effect would an increase in cattle ranching be expected to have on climate? increased temperatures.
