Female chickens (hens) that lay larger eggs are chosen to breed with roosters (male chickens) is it natural selection, artificial selection, or both ?

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Linda and julia are trying to determine whether their ideas are scientific or pseudoscientific. linda's idea is free of bias. julia's idea gives the same result when tested repeatedly. which statement is correct about linda and julia's idea?

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?