A lichen is composed of two distinct organisms living together that behave like a single organism. true false
<span>True</span>
Frog's heart<span> has one ventricle, while humans have 2, hence deoxygenated blood from body mixes with the oxygenated blood coming from lungs.
Source: S</span><span>ocratic</span>
Mitochondrial DNA mutation occurs at a constant rate throughout history. Thus, each different base in Mitochondrial DNA is able to show just how long ago the 2 species diverged from each other.
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Answer: i hope that helps ^^
Explanation:
Emotions such as anger and hostility ramp up your "fight or flight” response. When that happens, stress hormones, including adrenaline and cortisol, speed up your heart rate and breathing. You get a burst of energy. Your blood vessels tighten.
