Read the incomplete list of steps below, which shows how the excretory system maintains homeostasis. 1. nephrons in the kidneys remove waste and necessary materials from the blood. 2. ? 3. waste is eliminated from the body. which best describes what happens in step 2? water and glucose are returned to the blood. water and glucose are eliminated from the body. necessary materials leave the body through urethra. necessary materials are broken down into smaller nutrients

Exit what always affects measurement error in an experiment? a. investigator bias b. variability in nature c. instrument precision d. misreading the instrument

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.

Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat.o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat.habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.