Answer:
C) Na+ ions moving out of the cell
Explanation:
- Movement of Na+ ions out of the cell requires hydrolysis of ATP, a process called active transport.
- Active transport involves movement of materials against a concentration gradient using energy from the hydrolysis of ATP.
- Active transport system uses energy in the form of ATP to move substances such as ions into the cell or out of the cell.
Environmental impact and radioactive waste
Answer:
65 million years ago
Explanation:
At the end of the Cretaceous Period. Dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions.
Answer:
The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.
Explanation:
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