4. if one individual is tt and another individual is tt, which of the following is true?
the two have different genotypes and the same phenotype.
the two have the same genotype and the same phenotype.
the two have different genotypes and different phenotypes
the two have the same genotype and different phenotypes.

black

lasagna

lunch

math

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