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The flexing of an arm muscle uses mechanical energy.

A signal transduction process by a neuron uses electrical energy.

A ball at the top of the hill is an example of gravitational potential energy.

1. Mechanical energy

2.electrical energy

3.gravitational potential energy

pls give me brainliest

haploid cells;

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.