What is an important characteristic of the plant cell wall?
a. it is fluid.
b. it is rigid.
c. it is alive.
d. it stretches.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.