Which of the following statements is true? the earth’s asthenosphere is made of solid rock. the earth’s inner mantle is made of solid rock. the earth’s inner mantle and asthenosphere are made of solid rock. the earth’s inner mantle and asthenosphere are made of liquid rock.

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient