What system does the circulatory system work with to obtain oxygen for the body?

What word is used to describe differences of individual organisms

What does it mean for a cell membrane to be selectively permable

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds? first generation y y y yy yy y yy yy second generation y y y yy yy y yy yy there is a % chance that the offspring will have green seeds.