Which of the following is another example of an autotroph? a) mushroom b) grasshopper) cactus

Cactus

Explanation:

An autotroph is something that produces food from inorganic substances like carbon dioxide. So, most plants are autotrophs due to their photosynthesis. Cactuses use photosynthesis, so therefore, they’re autotrophs.

The other answers are wrong as one, mushroom is a fungi that relays on decomposed organic materials for food, and grasshoppers need grass.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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