According to the theory of biological evolution,
most present-day species of organisms
(1) developed from similar, smaller prehistoric
organisms
(2) have always existed in the form they have
today
(3) developed from fossils of the other organisms
(4) descended from earlier, different species of
organisms

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.