Dora's pet is having babies. the babies are born live and have fur. they drink milk that their mother produces. what kind of vertebrate is dora's pet? a mammal a reptile a bird a mollusk

Which blood cell spend most of their time in the lymphatic system?

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables