A.) Why do scientist have such a hard time categorizing protista?
b.) What kind of characteristics can protista have? Describe the characteristics.

4. Go to the following website: https://sciencing. com/list-fungi-benefits-8606974.htm l
(Links to an external site.)

This website talks about fungi. Answer the following questions based on the information found on this website:
a. What medical uses do fungi provide?
b. What environmental benefits do they provide?

5. Refer to your notes on "chapter 18.3 & 19.2" answer the questions below:
a. What is the difference between "punctuated equilibrium" & "gradualism" - describe how they can lead to very different "paths" to evolution.
b. Co-evolution is an example of "mutualism". Look-up one example of a "mutualistic relationship" where the species may have co-evolved to depend on each other. I gave you 2 examples in your notes (you can't use mine). Provide the example and explain how both species benefit from this relationship?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa.which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.