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sry I just wanted the points I'm in middle school so I don't know this stuff either but can you give free brainlyest I'm soo close to my next rank I'd really appreciate it if you could
Answer:
The blood travels back to the heart to get oxygen.
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One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.
Explanation:
Answer:
1.Tetrose
C4 sugars
2.Pentose
C5 sugars
3.Hexose
C6 sugars
4.Heptose
C7 sugars
Ordered smallest to largest in numbers.
