Which describes density?
amount of volume for a given object
ability of an object to take up space
amount of mass in a given volume
ability of an object to float in water

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

Environmental differences within ecosystems are generally caused by

What in scientific term why the salty popcorn causes this thirst