What do all vertebrates and invertebrates have in common? A) They are prokaryotic.
B)They are covered by an outer skeleton.
C)They are multicellular.
D)They are bilaterally symmetrical.

C. They are multicellular

Explanation:

Animal Cells

- All animals are eukaryotes

- All animals are multicellular

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.