A group of science students went on a hike around the campus to investigate how energy flows through an ecosystem. Which level of the food chain would the students encounter most often?

What is the sequence of amino acids corresponds with the rna strand ucg ggg cac

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.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?