Human Impact on the Environment — Cumulative exam Answers

Hyenas and lions have fierce battles over food. Which type of relationship does this describe?

Imagine a person stepping on a pin and pulling his or her foot away. Look at the reflex arc of this scenario below.

Consider this microscopic image of bacteria. Which bacterial form is shown in the image?

Ari drew a diagram to show organisms in an ecosystem.

When comparing dogs to wolves, scientists found evidence that supports the idea they come from a common ancestor. Which combination of evidence would most strongly support this idea?

Some species of wasps are social. The queen starts a colony from scratch each spring. She builds a small nest, and lays and raises a group of female workers. The workers enlarge the nest while the queen continues to lay eggs. Unfertilized eggs become males that mate with newly hatched females. All of the wasps except the newly fertilized females die by the summer.

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?

A farmer has applied a pesticide to control a pest population that is affecting her crops. The pest population has reacted as shown below.Which best describes the process that the pest population has experienced due to this environmental change?

Which is a requirement for natural selection to occur?

Which is an advantage of flowering plants?

Brendan made a diagram to compare and contrast the benefits of two types of social behavior.

A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of limiting factor causes this?

Which of the following is an example of adaptive radiation?

Which best describes the movement through the nephron?

Fossils show how the complexity of living organisms has changed over time. Gerobatrachus hottoni was a unique organism that lived during the Permian period between ancient salamanders and ancient frogs. Scientists have nicknamed this organism the “frogamander” because it is believed to be a common ancestor of both modern frogs and salamanders.Which type of fossil is Gerobatrachus hottoni most likely to be?

The graph shows the changing levels of hormones during menstruation and ovulation. What happens to hormone levels during ovulation, and why is this important?

Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?

Which scientist disproved the idea that life comes from nonlife?

Veronica got a cut on her arm, and it started bleeding. Her circulatory system started working hard to prevent blood loss and protect against infection.Which two components of the blood were functioning at a higher level than normal?