I'm pretty sure it is a spectrometer (which is used to spread out the rays in the star). Is this what you were wondering? <span />
Man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use
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.
Answer:
This leads to dilation of the walls of the respiratory lower respiratory tracts.Thus maximum volume of air is conducted (inhaled) through these tracts to reach the lungs with each inspiration. The rate of diffusion of oxygen across the bronchi walls also increases with the dilation; with consequent increases in perfusion pressure of oxygen with Hb in the blood.
Explanation:
