I think the correct answer from the choices listed above is option B. The difference in biodiversity between the tundra and the tropical rain forest would be that warmer temperatures and higher average rainfall in the tropical rainforest allow more things to survive. Hope this answers the question.
It is an oomycete.
These can often look like fungi, but they're not! They're actually more closely related to algae than fungi.
Make sure you're safe and if u get hurt severely, rush you a hospital