Answer:
She got infected through the water she drank at the stream.
Explanation:
Protozoa is a type of pathogenic microorganisms.
Giardia are flagellate protozoa that cause the disease called giardiasis. The parasites enters the body through ingestion of contaminated food or water The food or water are usually contaminated by the feces of infected people or animals.
The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever.
The symptoms in the question above points to a likelihood that Terri’s sickness was caused by a Giardia protozoa.
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
I think it's B., calcite.
Not sure though.
Hope this helps,
-Tiara
The correct choice is d, the burning if fossil fuels because fossil fuels do a lot of harm to the world.
