Which is the largest group of arthropods?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

What are simmilarities and differences between anaerobic respiration in animal and yeast cells? would prefer to get simmilarities as i already got some differences. you!

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca