What is the source of Earth's magnetic field?

A) Earth's orbital motion

B) Liquid iron moving within Earth

C) Charged particles from the
Sun

D) Friction between ocean waves and land

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.

Which structure in the cardiovascular system connect arteries to veins?