a. What are two ways in which the hydrosphere is intersacting with the geosphere in this river? b. How is the biosphere interacting with the hydrosphere and geosphere in this river c. Describe the difference between the movement of boulders in this river and the movement of pebbles or sand?

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Nucleic acid certain protein cell membranes certain carbohydrates

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes