1. B 2. c. 3. B and im not sure about the other two
Baryonic dark matter may occur in non-luminous gas or in Massive Astrophysical Compact Halo Objects, and stars. So therefore it’s D.
The DNA has to code for a protein and it has to replicate
Desert ecosystems.
Explanation
It’s very dry in the Southwest. They get hardly any precipitation and it’s very hot.
