When a snail is touched it retreats into its shell this is an example of? a. reproduction b. response to a stimulus c. metabolism d. a unicelluar organism

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What is responsible for the uneven heating between the poles and the equator on any given day