Which resources does the National Park Service manage? Check all that apply.

seashores
monuments
memorials
wildlife refuges
ecosystems
endangered species

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

Which of th following best describes how genes produce traits in an organism?