A person who is suicidal and can see no reason for living BEST fits which definition of abnormality?

If an organ has six haploid chromosomes, how many chromosomes are present. 6 12

Adistinctive characteristic of mammals that is not observed in other vertebrates is

Not all areas on earth's surface receive the same amount of radiation because earth's surface a. is flat c. has continents on it b. is curved d. is mostly water select the best answer from the choices provided a b c d