The right answer is B. The tree absorbing carbon dioxide
The Earth's atmosphere is the gas / particles surrounding our planet. Most of the air consists of nitrogen, oxygen, then other gases, including argon and carbon dioxide.
Biosphere is a planetary system including all living organisms and environments in which they live (the tree in this exercise).
The Catskills are considered a dissected plateau as at one point it was a complete plain level land that due to seismic activity got uplifted and then eroded over time, otherwise the entire land piece is part of a much larger plateau.
Answer:
The Diaphragm
Explanation:
"As the diaphragm contracts, it increases the length and diameter of the chest cavity and thus expands the lungs. The intercostal muscles help move the rib cage and thus assist in breathing." - https://www.merckmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/control-of-breathing
Watson and Crick first discovered the structure of the DNA molecule. The structure was described as having a double helical structure. The structure is composed of molecules or bases called nucleotides. The structure was found to have 4 basic nucleotides or base pairs. They are namely adenine, guanine, cytosine and thymine.
