Photosynthesis and Cellular Respiration Are Both Complementary and Relatively Balanced

question 27

Multiple Choice

Photosynthesis and cellular respiration are both complementary and relatively balanced, but early in the history of life on Earth photosynthesis appears to have dominated, as evidenced by the

• A)accumulation of atmospheric oxygen.
• B)declines in historic sea level as photosynthetic organisms consumed water.
• C)gradual warming of Earth's climate as CO₂ slowly accumulated.
• D)all of the above

---

Definitions:

Double-reduction

A gear arrangement in transmissions that uses two sets of gears to significantly reduce the input speed, providing increased torque.

Single-reduction

A gear configuration where the reduction of speed and increase in torque are achieved through a single stage of gearing.

Axle Hub Arrangements

The specific layout and configuration of axle hubs within a vehicle, which impacts the distribution of forces and overall vehicle stability.

Semi-floating

Describes a type of axle or bearing arrangement where the axle is partially supported by bearings or a bushing at one end, used in various mechanical applications to reduce stress and wear.