B The colonies had different growing seasons, the south had the heat and the soil most suitable for growing cotton, which was very popular in Europe in that time period.
Answer:
-The muscles will stay rigid until actin and myosin cross-bridges are destroyed.
-In the noncontracted state, troponin covers tropomyosin-binding sites on actin.
-T tubules help transmit the action potential to release calcium and start contraction.
Explanation:
For forensic science experts, the presence of rigor mortis helps in determining the time of death. It is the body muscles that normally help; if the body muscles are in a relaxed state for the first 3 hours after death, stiffens between 3 hours and 36 hours, and turns relaxed again. then the time of death can be traced easily.
D. The spread of the Christian Religion after Constantine converted to it
