Astudent is looking at a bacterial specimen using the oil immersion lens, but has forgotten to put immersion oil on the slide. the specimen will appear: ) smaller than it would if immersion oil was used. b) larger than it would if immersion oil was used. c) somewhat fuzzy and have poor resolution. d) the same as it would if the immersion oil was used. e) to have no color.

C, the specimen will appear fuzzy and have poor resolution

Explanation:

Immersion oil is used in a microscope to improve image quality. The oil has a high refractive index that allows light concentrate on the specimen (prevent light from away from the specimen).

"a.) well–developed vascular system."

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )