Answer: C. Gravel
Gravel has the highest permeability.
Answer:
Homologous chromosomes are two pieces of DNA within a diploid organism which carry the same genes,
Function of integumentary system: PROTECTION<span>- barrier against infectious, chemical, radioactive, and physical damage.
- keratin and junctions block bacteria, fungi, and blunt objects.
-macrophages identify foreign particles and activate immune response.</span>
The sun provides the energy for photosynthesis. Cells use sugar as a source of energy. The products of cellular respiration are CO2 and H2O. These products are used by plants to make sugar and oxygen through photosynthesis.
<span>The atomic mass is the number of protons plus the number of neutrons in an atom.</span>
