What role do trees ,caterpillars ,and birds have in a food chain?

Which one of these is a involving in both sexual and asexual reproduction

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?