Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Pea plants
These belong to legumes and legumes have a mutualistic relationship relationship with bacteria which allows them to add atmospheric nitrogen into the soil by a process called nitrogen fixation.<span />
Answer:
C) period
Explanation:
Groups are columns on the periodic table (with the same number of electrons on the outer shell of the elements), whereas periods are rows (increasing in atomic number by 1 - 5, 6, 7, 8, 9 etc.)
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Answer:
sun
Explanation:
it gives energy to all things. light energy.
