Would all pigs in a litter have the same father? what about non identical human twins or triplets

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Explain why phospholipid molecules form a bilayer. (3 marks)