1. What is the rhizosphere? 2. When we think of roots, we naturally think of absorption: the absorption of water and minerals from the soil. However, roots do other things, too. Explain two other root processes described in this article.

3. Describe the main similarities and differences between the the relationship between a legume and rhizobia and the relationship between a fungus and a plant.

4. The rhizosphere greatly influences root structure, but what other factors also influence root structure? List at least three.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.