Answer:
1. negatively charged ion
Explanation:
The scientist who is said to have discovered all the four nitrogenous bases present in the DNA of all organisms is, Erwin Chargaff, an Austro-Hungarian biochemist who immigrated to the United States. Hope this helps!
Answer:
A. Burning fossil fuels
C. establishing state parks
E. using renewable energy sources
Explanation:
The red algae was the plant group that includes the Ancestors of plants.