cell produces a chemical that diffuses short distances to reach nearby cells. This type of cell-cell interaction is an example of .

The answer is Paracrine signaling.Hope it helps you a lot

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11