<h2>Expiration is typically a passive process that happens from the relaxation of the diaphragm muscle (that contracted during inspiration). The primary reason that expiration is passive is due to the elastic recoil of the lungs. Exhalation begins when inhalation ends.
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Answer:
Radiation and mutations can cause changes in the DNA but there arent substances. Ribonucleic acids can cause errors if they match with the wrong acid.
Answer:
B. evolutionary relationships.
Explanation:
Systematics is biological study of the relationships among living things through time. It is used to understand the evolutionary history of life. Usually, relationships among organisms are presented and vizualized through the evolutionary trees. Branching of the tree shows group relationships while branch length shows amount of evolution.
Answer:
Precipitation is water released from clouds in the form of rain, freezing rain, sleet , snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain. How do raindrops form?
Explanation:
All the moisture has dried up causing the winds to blow away the soil causing soil erosion.
