Macromolecules that contain carbon are called

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

How did the average and range of beak size differ between birds that survived the drought and birds that dies?

Abird is flying in the air at a 4 m/s. if the mass of the bird is 7kg what is it’s kinetic energy