2. How do the nitrogenous bases pair? pairs with pairs with 3. If a strand of DNA has 20% C, what percent will be G?

4. If a strand of DNA has 35% A, what percent will be T? 5. If a strand of DNA has 10% G, what percent will be T?

5. List three facts about the structure of DNA

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.