The greenhouse effect is when heat from the sun enters our atmosphere and *
A:all heat bounces right back into space
B:all heat stays in our atmosphere
C:damages our atmosphere
D: some of it is trapped and some is radiated back into space

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

What type of plant is good for a bioassay and where can i buy it? i only have a month.