1. An unstable nucleus releases radiation in the form of a helium particle. What process is occurring! a) Fusion
b) Fission
c) Alpha Decay
d) Beta Decay

Alpha Decay
When a nucleus is unstable because it has to many protons, it releases an alpha particle. An alpha particle consists of two protons and two neutrons, so it’s a helium nucleus. This is alpha decay.

c : alpha decay. goodluck

An ecosystem is in a certain area and includes living and non living plus there is weather conditions and a biome is a large amount of area with similar climate.so ecosystem is based on weather and biome is based on the average climate