Why does darkness affect the light-independent reactions of photosynthesis?

plants stop their daytime activities and rest during the night much like animals do.

light independent reactions need more heat energy than nighttime temperatures often provide.

mitochondria produce sugars more effectively in the darkness than chloroplasts do.

light independent reactions require the energy gathered in the thylakoids.

What is the next step in muscle contraction after the actin changes shape? (apex)

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano

What are positive impacts of algae? how is it used?