In an ecosystem, material can be recycled. Which of the following materials can cycle through this ecosystem ?

A. water
B. oxygen
C. Carbon
D. All of these

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Does mitochondria still meet the definition of a eukaryote why or why not?