Abrain stem cell only produces its own type of cell. which type of stem cell is this brain stem cell? a. totipotent b. pluripotent c. multipotent d. unipotent

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

How does the nervous system affect the excretory system?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion