Echinoderms use pheromones to communicate with each other, and starfish and sea urchins are also echinoderms. Given these facts, what uses pheromones to communicate with each other among the following options: - starfish - bees - bacteria - honeybees - density - humans - h2o - insects
starfish

(Question)
Astem is used to store water by some plants, and every plant and animal needs water to survive. Given these facts, what do stems help plants do among the following options: - reproduce - survive - expire - stay warm - growth - move - support - hide
(Answer)
survive

Ques: Macroevolution occurs over geologic time above the level of the species, and all geologic time can be divided into two eons. Given these facts, macroevolution most likely occurs over what period of time among the following options: - Summer - length - eons - long - growth - Earth - years - scale
Ans: eons

(Q).
Breathing is when a gill converts from oxygen in water into oxygen in blood, and many people confuse breathing with respiration, but breathing is just the first step of respiration. Given these facts, what is it when a gill converts from oxygen in water into oxygen in blood among the following options: - fertilization occurs - prolactin release - preventing heat transfer - first step of respiration - last step of digestion - flow of electrons - death - fish
(A).
first step of respiration

Ques:Cancer is a disease that occurs when the cell cycle is no longer regulated, and mitosis is part of the cell cycle. Given these facts, what disease is caused when mitosis is regulated among the following options: - tuburculosis - death - HIV - disease - illness - arthritis - Toxicity - cancer

Ans:cancer

Question: Fertilization occurs when a sperm and an egg fuse, and fertilization As far as fertilization, timing is critical. Given these facts, when is timing critical among the following options: - for gravity - Warm air moving into cold air - earth's orbit - when sperm and egg fuse - flow of electrons - earth's rotation - Earth revolving around the sun - movement of tectonic plates
Answer:
when sperm and egg fuse