Answer:
Lack of oxygen
Explanation:
There are two mechanisms for energy production (glucose breakdown), aerobic and anaerobic. When adequate amounts of oxygen are present, aerobic mechanism is used. However, when there is insufficient oxygen, such as during exercise, the anaerobic mechanism is used.
Answer:
Plant cells have a large central vacuole that takes up most of the cell’s space, and animal cells have many smaller vacuoles.
Explanation:
Plant cells are characterized by the presence of large vacuoles present in the center of the cell. The vacuole is large enough to occupy as much as 90% volume of the plant cell.
On the other hand, animal cells have a centrally located nucleus. They do not have large vacuole. Rather, animal cells have many smaller vacuoles that are present near the periphery of the cell.
The pattern shows that the number of hours of daylight per day is higher in the summer and lower in the winter. This pattern is caused by the tilt of Earth’s axis. At some points in Earth’s orbit around the Sun, the tilt causes one hemisphere to lean towards the Sun while the other one tilted away.
A- the energy was stored in chemical bonds before it became heat and light
