Viruses cannot replicate by themselves, because they lack a lot of the cellular machinery to do so. This is why they have to invade a cell, and use the cells cellular machinery to help the virus replicate.
This is the reason they are not considered living.
I think the answers are D and A
Answer:
The free energy released by ATP hydrolysis that may be coupled to an endergonic process via the formation of a phosphorylated intermediate.
<em>Hope this helps</em>
<em>-Amelia The Unknown</em>
Answer:
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.
Answer:
the anus is the end of alimentary canal