Which of the following is an example of a negative incentive?

How does friction with the atmosphere affect the speed of an artificial satellite

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?