Answer:
2
Explanation:
The two DNA strands intertwine around each other to form a double helix.
Answer:
Virus
Explanation:
The question is basically asking what causes infections and diseases. There are certain things that can cause infections and diseases such as, a virus, fungi, bacteria, or parasites. So a virus does fit in this statement
I hope this helps :)
recycling and using alternative power
Answer:
Pythons and boa constrictors have tiny hind leg bones buried in muscles toward their tail ends. Such features, either useless or poorly suited to performing specific tasks, are described as vestigial. ... Vestigial legs are a clue that snakes descended from lizards.
Explanation:
Hope it helps!
If not, I'm sorry I couldn't help :(
