Ababy star that is still gathering mass in a nebula and has not begun fusion is called

The star is called protostar.

Explanation:

A protostar is a youthful star that is as yet assembling mass from its parent sub-atomic cloud. The protostellar stage is the most punctual one during the time spent outstanding evolution. For a low mass star (for example that of the Sun or lower), it keeps going around 500,000 years.

The stage starts when an atomic cloud part first falls under the power of self-gravity; and an obscure and weight bolstered center structures inside the crumbling section. It closes when the infalling gas is drained, leaving a pre-principle arrangement star, which agreements to later turn into a fundamental grouping star at the beginning of hydrogen combination.

plant because they survive by water, sunlight, ex.

explanation:

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.