Why is it necessary for the diaphragm to relax and for the chest cavity to recede during exhalation?

Which of the following represents a negatively charged ion? of t 7

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.