The biological basis for assigning all human beings into a singe species is that there so many, even tons of living organisms living on earth. These organisms differ in their external and internal organs and so to differentiate them from them, they are being classified into kingdoms then classes then phylums then family.
Answer:
Check for chloroplasts for a plant cell and look for mitochondria's for an animal cell
Pardon? I don’t understand the question
Answer:
The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Explanation:
hope this helps
I believe the answer is b
