Explanation:
These base pair relationships are often called Chargaff's rules of DNA base pairing, named after the Columbia University scientists who observed that there are equal molar concentration of A & T, as well as G & C in most DNA molecules.
Answer:
Gases that lead to air pollution include carbon, nitrogen and sulfur oxides. Explanation:
Human activity can affect the river ecosystems because first of all humans take the water and use it for themselves, they also pollute it, disturb the ecosystems and kill fish or oysters etc. in the ecosystems.
Answer:
ice , mirror , soap , oil , lubricant surface are examples write anyone of your choice.
Explanation:
please mark me brainliest
It is D & E. Uranus is Helium & Hydrogen, And it has dark rings
