Red blood cells (erythrocytes) are biconcave disks and this shape increases the of the cell and maximizes diffusion of gases

Covalent bonds are formed between metals and boiling points true or false

The influenza virus cause the flu, but not other diseases. why?

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?