It would be 2) two atoms exchange electrons and become ions
Hemoglobin serves as a chemical messenger
Examples of lipids include fat boils wags his hormones and steroids. Lipid or non-polar molecules so they are not soluble in polar like water.
Answer:
if sex cells were identical, there won't be genetics variations and we will just all be identical to our parents. genetic variation allows us to better adapt and survive
Answer:
Oxygen
Explanation:
A waste product of photosynthesis organisms need for cellular respiration is oxygen. We breathe out carbon dioxide and plants use carbon dioxide during photosynthesis and in return they give us oxygen which is their waste product.
