Involuntary, meaning things in the body such as your heart is all regulated to act unconsciously while also receiving directives from the brain.
Crude oil: Through drilling wells
Coal: Through surface and underground mining
Natural gas: Through hydraulic fracturing
Answer:
Microtubules, like actin filaments, are dynamic structures: they can grow and shrink quickly by the addition or removal of tubulin proteins. Also similar to actin filaments, microtubules have directionality, meaning that they have two ends that are structurally different from one another. I hope this helps :)
Answer:
it is every organisms goal to "survive and repopulate" therefore, with natural selection the weaker organisms die because they did not possess the traits necessary to survive, and the strong survive and repopulate
Explanation:
