Answer:
Iodine
Explanation:
Iodine is needed by animals because the body's metabolic rate is controlled by the action of an iodine hormone, called thyroxine, which is secreted by the thyroid gland in the neck.
If the animal fails to supply enough iodine through food to be able to make a normal amount of this compound, then the thyroid gland enlarges or expands trying to create enough, resulting in a common type of goiter.
Answer: Internal skeleton, flippers/fins & tail, and embryos with 4 limb buds3.) brainliest??
Explanation:
Answer:
A pteridophyte is a vascular plant that disperses spores. Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden. Ferns, horsetails, and lycophytes are all pteridophytes.
Explanation:
The gras are not subject to food...
when you put your finger on something hot your nervous system gives your brain a message that tells your brain that that thing is hot and your brain tells you what your touching is hot and then you pull your finger away.
plz give brainlist
