Answer:
D is incorrect. Took the quiz. The most acceptable answer is either A or C
1 H2SO4 + 2 NaNO2 ---> 2 HNO2 + 1 Na2SO4
Answer:
Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. ... Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations.
Seeing that our species is constantly evolving, maybe it is starting to get more uncomfortable to walk on all fours.
Answer:
it has many years on it
Explanation:
it is old so it is not new
