Answer:
conformational change in troponin
Explanation:
The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.
Answer:
In open systems both matter and energy move into and out of the system. Earth's four spheres are open systems. These four spheres work together to form one large closed system called Earth. The atmosphere is a mixture of gases that surrounds and protects our planet.
Explanation:
Valves are found im veins!!
Answer:
The endocrine system:
releases hormones into the bloodstream
Explanation:
The endocrine system releases hormones into the bloodstream in order to get to the targeted organ
<span>The human population is in an era of unprecedented growth. Developing countries typically have a birth rate well above replacement and some of the largest nations in the world have just recently become fully developed or are still developing: China and India. Their growth still outpaces the entirety of Europe which, on average, has a birthrate well below replacement. This low birthrate is typical of a first world country.</span>