What is the goal when using a dichotomous key?

A- to see changes in an organism

B-to analyze anchganism's DNA

C- to determine lifespan of organisms

D- to identify an organism

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks