sci 225 questions with answers 2024

sci 225species richness - correct answer the total number of different species in a community species evenness - correct answer the relative abundance of species in a community (concentration of that species) which statement best describes biodiversity at the equator - correct answer species richness is higher at the equator than at the poles sedimentary rocks provide evidence of - correct answer long term (more than 1 million years) regional climate change a genetic mutation causes a newt to have faster reflexes. After many generations, most of the newt population has the reflex mutation. which of the following most likely caused this change - correct answer news with the mutation are better able to survive and reproduce than newts without the mutation what do scientists use oxygen isotopes form ice cores to estimate - correct answer temperature of the atmosphere in the past which of the following is true about natural selection - correct answer it acts on existing heritable variation which orbital parameter or movement is similar to the movement of a spinning top - correct answer precession a scientist is studying two populations of rodents: one at 5,000 ft altitude & one at 5,200 ft altitude. they have small differences in fur coloring and are classified as two diff species. the scientist claims that the two populations are actually a single species according to the biological species concept. what supports his claim - correct answer rodents from the two populations interbreed and produce viable offspring