Solid waste and methane are excreted by the system while carbon dioxide is excreted by the and respiratory systems.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Amoeba sisters video recap pedigrees