Answer:
d) levels of nitrate pollution in local waterways
Explanation: This type of data can be expressed and measured numerically.
B I think is the answer sorry if I’m wrong
Answer:
All of life can be divided into three domains, based on the type of cell of the organism: Bacteria: cells do not contain a nucleus. Archaea: cells do not contain a nucleus; they have a different cell wall from bacteria. Eukarya: cells do contain a nucleus.
Explanation:
Hemoglobin carries oxygen in them
