The main idea of paragraphs 2 and 3 is that zoos help protect wildlife and teach people about wild animals such as Sumatran tigers. Select the two key details that best support the main idea of those paragraphs.

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 .

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.