Question 19 (04.04 MC)
Every year, millions of acres of land are cleared by forest fires. Which of the following best describes a consequence of these catastrophic events? (4 points)

a
Carbon dioxide levels decrease rapidly in the areas near the fire.

b
Population sizes will increase as new species move into the cleared area.

c
Invasive species will quickly take over the disturbed area.

d
Biodiversity will decrease in the area of the fire.

How do disease caused by bacteria and disease caused by viruses react to antibiotics

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)

Which characteristics must an object possess in order to be considered alive?