If you cross an HH individual with an hh individual, what is the expected ratio of offspring phenotypes

According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

The pronunciation aid that determines the stress placed upon a syllable is the