Answer:
a. When a fetus is 13-15 weeks old
Explanation: is correct
<span>A cell is surrounded by water, there is also a lot of water inside.</span>
-The tail go together
Answer:Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP and NADH via energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation.
Explanation:
Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs.
Answer:
D: There is no wind on the moon
Allele frequency:
Number of times an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
