How does the fossil record contribute to our understanding of evolutionary processes?

Three populations of crickets look very similar, but the males have courtship songs thatsound different. What function would this difference in song likely serve if the populationscame in contact?

Which mechanism can result in immediate reproductive isolation and rapid speciation?

On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated,freshwater ponds that were once united. The predator-rich ponds have mosquitofish speciesthat can swim in short, fast bursts; the predator-poor ponds have mosquitofish species thatcan swim continuously for a long time. Choose one method of secondary contact anddescribe a hypothetical scenario of what could happen if these two mosquitofish specieswere reunited in the same body of water.

Which of the following factors is the primary criterion for determining species boundarieswhen applying the biological species concept?

Which sequence best explains how non-living chemistry could have led to the first cells?

Analyze the following passages using the topoi to the best of your ability and/or connecting it to our course themes or discussion. The following passage comes from Deaf Republic: At the trial of God, we will ask: why did you all all this? And the answer will be an echo: why did you allow all this? 

In a large lake, all fish originally interbreed freely. A new microhabitat forms due to submerged vegetation, and some fish begin using this habitat while others remain in open water. Over time, niche differentiation occurs within the population. If speciation results, what type of speciation has occurred?

Normal heart rate for an infant age 1 to 12 months old?

After the passage of the Intolerable Acts in 1774, the Committee of Correspondence and the Sons of Liberty began spreading warnings about how the acts would affect the liberty of all colonists, not just urban merchants and laborers.