The last option is corrrect because when one species move away from an environment or die it lead to decrease in biodiversity as well as the overall health of ecosystem also decreases.
Carbon dioxide should be the answer considering its a huge focal point in our climate today and how it affects it.
The answer is B
hope this helps :)
Chemical composition of the Sun and the movement of galaxies.
Astronomers are scientists who study the universe and the objects within it such as the sun, galaxies, stars, planets, star forming regions, and the evolution of the universe. Chemical composition of the Sun and the movement of galaxies are the types of evidence that astronomers use to estimate the age of the universe and stars. Astronomers detect the movement of galaxies by viewing its light spectrum. Astronomers can measure the expansion rate of the universe accurately by taking the measurements of many galaxies. Also, the chemical composition of the sun gives astronomers some idea about the age of the universe and stars.
A. The hot air carries the heat over to you.