<span>The high and low tide are caused by the gravitational forces between the earth and the moon</span>
The stimuli plants respond to will be found in the environment. Example....plants grow towars the sun.
In the human respiratory system, gas exchange occurs across the cells of the alveoli. Alveoli or an alveolus is the deepest part of the human respiratory system. This part of the respiratory system is a place where gas exchange between oxygen and carbon dioxide occurs from inhaled air to the blood cells<span>.</span>
Answer:
the answer is the second option you gave
