What organisms did Darwin study to compare development between species to support evolution?

How many chambers does a frog's heart have, and give their names?

Read this excerpt from "The Big Shot." In her most recent test, she asked golfers who had just finished playing to find on a chart a black circle that was the same size as a cup on the green.

A piece of metal with a length of 2.83 cm was measured using four different devices. Which of the following measurements is the most accurate? 2.837 cm 2.829 cm 2.812 cm 2.805 cm

How are one celled eukaryotes different from cells in many celled eukaryotes

The flower color of the Four-o'clock plant is determined by alleles of genes that demonstrate incomplete dominance. Heterozygotes have an intermediate phenotype of pink flowers while homozygous individuals have either red or white flowers.

What is a short sequence of characters that appears at the end of a filename and is preceded by a period called?

Characteristics that allow neurons to communicate with other body cells include:a) Relaying motor impulses from the cortex to the thalamus. b) Stimulation of "association areas" to analyze information received.

What intensity level of aerobic exercise is considered moderate for older adults?

Anything that is built or created in an organized manner

Adults do not need foods from the dairy group, only growing children and athletes do.