Population a group of same species living together
Natural selection: the process by which organisms, with traits that help them adapt to a changing environment, are able to succesfully reproduce
Answer:
the answer is 2:oxygen
Explanation:
Plants and animals carry out cellular respiration, but only plants conduct photosynthesis. Cellular respiration is the process in which a cell uses oxygen to convert glucose, a simple sugar, into the energy-carrying molecule, adenosine triphosphate .The oxygen in carbon dioxide is released as oxygen gas.
The correct answer is "headache and confusion".
The human body has several mechanisms of action in order to protect critical organs from excess blood pressure and flow. When these mechanisms are not successful in protecting the capillaries of the brain, the patient could suffer from cerebral edema (swelling of the brain) and papilledema (swelling of the optic nerve). These conditions could cause severe headache, confusion, motor and sensory problems and visual disturbances.