Which of the following happens during conditions of eutrophication in a river?
a. oil spills lead to an excess of dissolved oxygen
b. fertilizers poison aquatic plants that require different nutrients from land plants
c. fertilizers from farm runoff chemically react with dissolved oxygen, making the water acidic and killing fish
d. nutrients from fertilizers cause thick mats of algae to grow, eventually leading to a
loss of dissolved oxygen

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

By examining a wave’s pattern after it interacts with a barrier or gap, measurements can be made to better understand certain wave phenomena. what is a broad question you can answer by doing this experiment?