Answer:
the heart it is because the heart beats and it goes up and down
I would say d
hope it helped
Answer:
D, a gas produced durning photosynthesis (i think)
Explanation:
Just finished the final exam
Hello there ^ _ ^
I believe the answer is : A - Evolution
Good luck!
Answer:
Nucleic Acids:
- Uracil
- Adenine
- Guanine
- Cytosine
Explanation:
Since we only have one strand shown, I'm going to assume it is RNA. Both DNA and RNA have nucleic acids, but RNA has 1 different nucleic acid; it replaces Thymine with Uracil. So the 4 nucleic acids are uracil, adenine, guanine, and cytosine.
If the picture shown is a cross-section of DNA, then our 4 nucleic acids are adenine, thymine, guanine, and cytosine.
