Answer:
i believe the answer is d or c sorry if im wrong
Explanation:
u_u
Explanation:
Having filtered out small essential molecules from the blood - the kidneys must reabsorb the molecules which are needed, while allowing those molecules which are not needed to pass out in the urine. Therefore, the kidneys selectively reabsorb only those molecules which the body needs back in the bloodstream.
Answer:
The only types of mutations that matter to large-scale evolutionary species are the mutations that can be passed to offspring (Genetic).
Explanation:
If a mutation is passed to offspring, through the generations it will become more and more prevalent...Eventually causing a pretty good dent on a population size. Hope this helps : )!
Holder you just got to get the products
Answer:
They have helical thickening of lignin in their walls to prevent collapse
Explanation:
the primary function of Xylem and its conducting vessels tracheids is to provide support and tranport water and minerals in plants.
Xylem vessels have layers of dead materials in the walls called LIGNIN. Lignin is a polymer; a very strong, hard materials that stop water passage through it,because it contains dead cells,
Therefore the presence of deposit of these strong impermeable, ligified walls in its walls prevent its collapse during mass flow of water of transpiration pull.
