Which properties do not change the composition of a substance? a) chemical properties b) physical properties c) chemical and physical properties d) neither chemical nor physical properties

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.

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?

Some substances but not other can cross the (blank) membrane of a cell