Ice cores from Antarctica allow scientists to measure the amounts of atmospheric carbon dioxide from long ago. These samples would BEST provide evidence for -magnetic field reversal
-continental drift
-the big bang theory
-climate change​

What is the difference between bacterial infections and viral infections?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

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.