What does pulse measure?
What does respiration measures?

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only