What is the relationship among DNA, a gene, and a chromosome?

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Both destructive and constructive, the natural event seen here, is important in destroying and creating landforms on earth. what is this event called? a) deposition b) flooding c) landslide d) sedimentation

Which individual below would be considered heterozygous? a. dd b. dd c. dd