Why do most scientists believe that all life on earth evolved from a single-celled ancestor?

Explain how force, motion, and energy interact with one another

How is mitochondrial DNA (mtDNA) typing used in forensic science?

The type of rna that carries the instructions for making a protein is called

an unfertilized egg cell has 6 chromosomes. after fertilization, how many chromosomes should the zygote have?

Schleiden and schwann believed

A survey on the Pacific coastline of California shows that kelp is currently being harvested faster than it can grow back. How would this resource be classified? A) Renewable B.) Nonrenewable C.) Potentially renewable D.) Primarily nonrenewable

A psychrometer is used to determine which weather variables?

Why do we can't sneeze without closing our eyes.

What begins when a neuron is stimulated by another neuron or by a stimulus in the environment?

8. Referring to Figure 2-1, the coyotes would be considered a. herbivores c. second-order consumers b. third-order consumers d. decomposers