For each pair. of expressions below without substituting in specific values ,determine which of the expressions in the given pairs is larger .explain your reasoning in a sentence or two. 5+t^2 and 3-t^2.

15/×^2+6 and 15/x^2 +7.

(s^2+2) (s^2+1) and (s^2+4)(s^2 +3)

8/k^2+2 and k^2+2

organisms that are both used in toothpaste as well as cause malaria are protista and monera.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers