Answer:
its A. The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
Explanation:
The answer is *C. is a slow, gradual change over time*.
Fern spore germinates into prothallus.
Explanation:
Ferns are members of phylum pteridophyta, the vascular cryptogams.
These are first land plants which are known to have a distinct conducting system of xylem and phloem.
They reproduce by forming spores that germinates into a heart shaped gametophyte.
The gametophyte of the fern is called prothallus.
The heart shaped gametophyte has root like structure called rhizoids.
These rhizoids anchor the gametophyte to the substratum.
Answer:
: Notice the rate of diffusion increases as the concentration gradient increases. If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high.
Kidneys filter the extra water plus toxic materials in our blood. The help maintains homeostasis by keeping the level of toxin down.
