JO Science/Health 8 - 12808-00001 - Per 3 / Module 08 The Earth
1.(03.01 LC)
Which of these is a characteristic of index fossils? (7 points)
Found in the topmost rock layer
Found in many layers of the same rock
Have already established relative age
O Are limited to a particular geographic location
2. (03.01 MC)

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

How does an angiosperm prevent self pollination