Question

question 1 (5 points) listen a shark would not be a good index fossil because a) salt water would degrade the fossil over time. b) no fossil records exist for sharks. c) the species has survived for too long. d) it doesnt have structures that can be preserved in a fossil. question 2 (5 points) listen whats responsible for causing eutrophication in waterways? a) fertilizers in water runoff b) pesticides in water runoff c) burning of fossil fuels d) deforestation

Explanation:

For Question 1: Index fossils are used to date rock layers and are from species that existed for a relatively short - lived geologically. Sharks have been around for a very long time, so they don't help in precisely dating a particular rock layer. For Question 2: Eutrophication is caused by an excess of nutrients, especially nitrogen and phosphorus. Fertilizers in water runoff contain these nutrients and can cause eutrophication in waterways.

Answer:

Question 1: C. the species has survived for too long.
Question 2: A. Fertilizers in water runoff