A reaction occurs in which carbon combines with sulfur to form carbon disulfide. Is this a chemical reaction or a nuclear reaction, and how do you
know?
A. This is a chemical reaction, because mass was not conserved.
B. This is a chemical reaction, because only the electrons were
rearranged.
C. This is a nuclear reaction, because mass was conserved.
D. This is a nuclear reaction, because there was a change in the
atoms' nuclei.

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

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.

Tides that occur during the new and full moons