Rutherford’s theory was identified by

beam of particles and their scattering after hitting on gold foil.

Explanation:

Rutherford’s theory was identified by beam of particles. The nucleus is present in the center of the atom. The nucleus consist of protons and neutrons. The mass of atom is majorly due to protons and neutrons. The nucleus is surrounded by the electrons.

The results were observed by placing the magnet after beam of electrons.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms