Question 9 What is the main difference between a prokaryote and eukaryote cell?

Answers:
The presence of a cell wall
The presence of genomic DNA
The absence of genomic DNA
Crossing over
The absence of a cell wall
Question 10

Please choose 1

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

Creating new things to solve problems and improve life depends on the close interaction of which two fields?

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water