Answer:
everything except the oxygen as they excrete oxygen
Answer:
Read the Quran. it tells you how did it begin
The Texture And Look Of A Microscopic Object
Answer:
The process of producing food, feed, fiber and many other desired products by the cultivation of certain plants and raising of domestic animals. Agriculture was the key development in the rise of sedentary human civilization.
Explanation:
Answer:
A. humans going underwater and exhaling
Explanation:
The dissolved oxygen in water refers to the amount of oxygen that is found in water. However, there are various ways that oxygen dissolves in a body of water, these includes;
- Photosynthesis of aquatic plants: Oxygen is the waste product of the photosynthetic process carried out by green plants. Hence, when aquatic plants undergo photosynthesis, oxygen from them tend to dissolve into water.
- Diffusion from the atmosphere: Oxygen from air or atmosphere also dissolves in water
- aeration as water moves over rocks and debris, and from wind and waves
However, humans do not exhale oxygen but carbon dioxide, hence, it is not a source of dissolved oxygen
