What is the name of the field of evolution that studies and looks for similarities between the early development of organisms? a) botanist b) embryology c) obstetrics d) internal medicine

B) embryology

Explanation:

Embryology by definition is the branch of biology and medicine concerned with the study of embryos and their development. All the other answer choices would not fit what your question is looking for. A botanist is someone who studies plants. An obstetrics is someone who studies childbirth. And internal medicine is completely out of the question.

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation:

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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