Although plant viruses cannot infect humans, what are some of the ways in which they affect humans?

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

List two modern organisms that have pentameral symmetry

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen