Answer:
Division of these two groups occurred after the protostome developmental sequence appeared
The function of the thyroid gland<span> is to take iodine, found in many foods, and convert it into </span>thyroid<span> hormones: thyroxine (T4) and triiodothyronine (T3). </span>Thyroid<span> cells are the only cells in the body which can absorb iodine</span>
Blood vessels expand during hot weather and retract/ tighten in cold weather
True!
Most energy enters ecosystems in the form of sunlight. Plants convert solar energy to chemical energy in the form of sugar. This energy will leave the ecosystem as heat energy.
I would say that the answer would be D) it obtains nutrients from its environment. Hope i could help!
