Speed and time is your answer to the question
Answer:
Sleep apnea.
Explanation:
Sleep apnea:
Sleep apnea is considered as serious sleep disorder in which patient's breathing during sleep repeatedly stop and start along with snoring.
So, here the scenario that Sarah's grandfather is suffering from sleep apnea because he takes nap on recliner and suddenly stop snoring and stop breathing and again resume the breathing along with snoring.
An ectotherm is an animal that is dependent on external sources of body heat
An endotherm uses heat that its body produces
So the best likely answer would be C.<span> whether or not the animal maintains a constant body temperature</span>
The smaller the surface area of a cell the easier it is the allow nutrients to enter the cell and have wastes exist the cell quickly. less energy is used!
Answer: are highly specific only work against certain antigens
are part of the body's adaptive immunity
Antibody, also called as immunoglobulin, are proteins which are produced by the immune system of the organism against the action of the foreign substance, also called as antigen. Antibodies recognizes specific antigens, removes them from the body and provides the body immunity. Antibodies are specifically produced by the specialized white blood cells called as B lymphocytes.