<span>The mantle is more dense, so it can not B.
Not even A , because the crust sure does contain naturally occurring radioactive material. Heat is also not efficiently transferred to the surface--most ground is cool,
so correct option is none is above that is D
hope it helps</span>
Answer:
plant cell
Explanation:
1.cell well-protected and provides structural support of cell
2.cell membrane regulates entries and entries of substances within the cell.
3.nucleus stores DNA
4.plastids they store starch help in photosynthesis
5.chloroplast pigment which protect cell
6.vacuole sustain turgid pressure against cell wall
7.mitochrondria provide energy to help break carbs
8.lysosome help with cellular waste disposal
This is possible because proteins are created from different combinations of amino-acids. While we only have 20 different kinds of aminoacids, these 20 kinds can create thousands of combinations that we can observe in our bodies and bodies of other mammals as well as other organisms.
A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen. Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds.
