Aforensic scientist examines a body that was discovered while still in a state of rigor mortis. in addition to environmental conditions when the body was found, what understanding will determine approximate time of death.

-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.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

wwii

explanation: