Which is a reason scientists at NASA study other planets? A. to learn more about making dried food for astronauts
B. to send astronauts to other planets in the future
O c. to find rocky material to use for building on Earth
D. to find different gases to bring back to Earth

Identify the main component f natural gas

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?