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.

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.