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First, identify some of the most important elements that compose Earth’s continental crust. Which two seem to be the most important and why? Second, describe some of the physical properties that provide a reliable means to identify common minerals. Also, discuss how certain properties can exhibit a range of characteristics […]

1.) What lands and observations inspired Darwin to develop his theory of evolution? 2.) How does the concept of natural selection explain variations in species descended from a common ancestor? 3.) What was the initial response to Darwin’s Origin of Species in 1859? 4.) What is a vector, and what […]

Below are seven statements related to the observation that many songbirds learn to sing their species song, instead of producing it “automatically” when they are mature. Label each following statement as either a hypothesis, (H), or a prediction, (P).  a. Male white-crowns learn their song early in life in order […]

21) Eye color is expressed by two genes- A and B. Dark brown eye color, A, is dominant over lighter brown a. Eye pigment, B, is dominant over lack of eye pigment, b. The B gene is epistatic to the A gene. The eye color spectrum goes from dark brown […]