Invasive species depopulating Native species.
Answer:
b. False
Explanation:
A scientific theory must have strong support from testable facts that are confirmed (or rejected) by observational and/or experimental procedures. The scientific method is a rigorous process that consists of arising a conjecture (hypothesis) which can be subsequently used to make predictions from its logical consequences, and finally to obtain information from empirical observations/experiments in order to obtain a conclusion about the veracity of the scientific claims (i.e., a hypothesis must be testable). In consequence, a scientific theory can not be based only on 'light' conjectures, but trustworthy observational data from the real world.
I think the correct answer is b
The large majority of spiral galaxies are flat, rotating disks. Within the disk, there are stars, dust, and gas. The disk also contains spiral arms and a central concentration of stars known as the bulge of the galaxy.