Which characteristic best explains why lotic ecosystems tend to have more dissolved oxygen than lentic ecosystems?.

The and the gall bladder work together to produce, store, and use bile to digest a) liver; fats b) stomach; fats c) appendix; food. d) pancreas; sugars

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition

Tim earns $9.20 per hour when he works at the college library how much money does he earn by working at the library for 4.5 hours