Which of the following groups includes the greatest number of organisms?

What group of mammals display the following characteristics?∙ embryos that spend more time feeding through the placenta than the mother’s nipples∙ young that feed on milk∙ a prolonged period of maternal care after leaving the placenta?

If an organism exhibits a head with sensory structures, which of the following characteristics would it likely also exhibit?

Which of the following structures carries out sexual reproduction in ascomycetes?

Which of the following statements is correct regarding lancelets?

If the body senses there is an increase in extracellular potassium, it will put more potassium directly into the collecting duct by

Every day you urinate approximately ________liters of slightly __________urine.

Every day you urinate approximately ________liters of slightly __________urine.

The greatest proportion of fluid in the body is found in the

The greatest proportion of fluid in the body is found in the