Alimestone rock is found in an arizona desert. the limestone is gray and has a fish fossil. what can scientists learn from the limestone? a) there was once a lake in the area. b) some fish lived on land many years ago. c) many years ago there were dinosaurs in the area. d) there were many trees and plants in the area at one time

I am pretty sure the answer is A

Explanation:

It wouldn't be B because fish can't survive on land. Even if it was an animal that survived in water and on land it wouldn't be called a fish.

Also, C and D don't make sense.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

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 : )