The amount of matter that cycles through a food web

a) stays constant.
b) continually increases.
c) continually decreases.
d) changes unpredictably.

*will mark brainliest to the first and correct answer less species diversity results in less a. oxygen b. food c. drinkable water d. all of the above

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.