Three species of lizards of the genus Gallotia are found on the Canary
Islands, a chain of seven volcanic islands off the west coast of Africa. The
easternmost island, Lanzarote, is the oldest, while the westernmost island, EI
Hierro, is the youngest. The distribution of lizard species is shown on the map
Which statement about the ancestry of the lizards from the genus Gallotia is
best supported by this information?

a. The ancestors of each species evolved in Spain and were brought to the islands at the same time
b. The common ancestors of the lizards probably came from Africa.
c. The ancestors of each species came from different continents at different times
d. The ancestor of the lizards first colonized the island of El Hierro

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples