Because the have hollow bones, feathers, wings, beaks, and they lay eggs
False. It's not always reliable. For example, in lab mice, saccharin has caused tumors. But for humans to get cancer from saccharin, we would have to take in astronomical levels of saccharin, which we, as humans, don't do.
Answer:
The answer is C.
Explanation:
At first, an enzymes called Helicase unwind the double helix in a DNA .
"Flower" is the producer here!!
Hope this helps!
awnser is high concentrations of oxygen
