An avocado can be a simple model of the structure of a eukaryotic cell which cell structure is represented by the seed in the center of the avocado?

A. Cell membrane
B. Cytoplasm
C. cell wall
D. nucleus

9. what area of study applies scientific findings to create ways for solving problems or improving life? a biogeology b mathematics c manufacturing d engineering

Which rate indicates the number of children that would be born per women if she were to live to the end of her child-bearing years

An adult inhales about 6.0×10−4 m3 of fresh air during a breath. only 20% of fresh air is oxygen. assume the pressure in the lungs is 1.0×105 paand the air is at a temperature of 300 k. how many oxygen molecules are in each breath? a. 1.4x10^23 b. 2.9x10^21 c. 4.9x10^-4 d. 2.9 x10^25