Damage is caused to an ecosystem by adding fertilizer because some of the substances to the fertilizer is toxic or create bad reactions.
<span>If two groups are related, this means that they share a common ancestor. The ancestor may not be a direct parent, rather, it may go back several generations. Nonetheless, if they are related, they have a common ancestor up the line somewhere.</span>
Answer: Contractility of the left ventricle myocardium ensures that blood will have enough force to reach the rest of the body.
Explanation: Frank Starling Law....Cardiac output=heart rate x stroke volume.
Smooth muscles (but depending on the specific type)