What are the four major glands of the endocrine system? a. pancreas, adrenal glands, pituitary gland, thyroid
b. pituitary gland, thyroid, intestines, adrenal glands
c. adrenal glands, pituitary gland, heart, thyroid
d. pancreas, adrenal glands, thyroid, liver

Nucleic acid certain protein cell membranes certain carbohydrates

Discuss the functions of epithelial connective nerviud and muscular tissues

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.