40. The validity of scientific theories and laws depends on evidence. Which of the following
statements of evidence supports a law rather than a theory?
A. Electrons orbit the nucleus of an atom within a certain radius.
B. DNA analysis reveals that a modern species is related to an extinct species.
C. Seafloor spreading occurs at a rate of three centimeters per year in the mid-Atlantic.
D. The amount of matter in a closed system is the same at the start of a reaction as at the end of
the reaction.

*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

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.