1. Blackberries on a tree do not ripen simultaneously, why? 2. What feature of trees gives them a particular advantage when dispersing seeds by air?

The gens present in the dna in the nucleus of the cell in the body

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass