In some habitats, the extinction of certain amphibian species could lead to the ____ of certain species of other amphibians, aquatic insects, reptiles, birds, fish, and mammals.

What are amphibians?

The diversity that enables life on the earth to adapt and survive environmental changes is called ____.

What is the variety of processes, including matter cycling and energy flow within ecosystems, which result from species interacting with one another in food webs?

The four components of biodiversity increase the ____ of ecosystems and increase the resistance of ecosystems to harmful invasive species.

Many of the earth’s plant species depend on ____ to pollinate their flowers.

The scientific study of insects is called ____.

Which of the following is least associated with biodiversity?

The variety of terrestrial and aquatic ecosystems found in an area or on the earth is called ____.

For natural selection to occur, an adaptive trait ____.

What is the ability of one or more organisms in a population to tolerate a chemical designed to kill it, such as when bacteria tolerate antibiotics?

Biological evolution by natural selection is when genes ____, individuals ____, and populations ____.

What adaptation has allowed humans to increase our chances of survival and reproduction through gripping and using tools?

What human adaptation may enable us to live more sustainably by understanding and copying the ways in which nature has sustained itself for billions of years, despite major changes in environmental conditions?

Why do species such as humans take a much longer time (thousands to millions of years) to adapt through natural selection than species such as bacteria and insects?

From a scientific point of view, which of the following is true?

The process whereby the earth’s life changes over time through changes in genes of populations of organisms in succeeding generations is called ____.

Who was responsible for providing a convincing explanation of how organisms change over time and are descended from a single common ancestor through the mechanism of natural selection?

The process in which individuals with certain traits are more likely to survive and reproduce under a particular set of environmental conditions than are those without the trait is called ____.

The variety in the genetic makeup of individuals in a population is known as ____.

Changes in the DNA molecules of a gene in any cell that can be inherited by offspring are called ____.

Scientists are now able to produce desirable traits in some organisms by adding, deleting, or changing segments of its DNA. This process is known as ____.

The earth has sustained life for ____ years.

The earth’s biodiversity is determined by the balance between ____.

Under certain circumstances, natural selection can lead to an entirely new species. a process called ____.

Geographic isolation may result from ____.

When a species becomes extinct over a large region, but not worldwide, it is called ____.

Which of the following is true?

What term describes the number of different species in a given area?

A measure of the relative abundance, or the comparative numbers of individuals of each species present, is called ____.

According to some scientists, the more diverse an ecosystem is, the ____ it will be.

The role a species plays in its ecosystem is its ____.

The loss of a(n) ____ can lead to population crashes and extinctions of other species in a community that depends on them for certain ecosystem services.

Before conservation efforts facilitated their comeback, the American alligator population was nearly completely wiped out primarily because of ____.

Which of the following does not describe an element of an ecological niche? Note: This will very likely be on APES exam. Study diagram.

A species with a broad niche is considered a(n) ____.

Which of the following would not be considered a generalist species?

Which of the following is true of specialist species?

Today, the ____ is among the most threatened of all species in the world, with only 1,600 to 3,000 individuals left in the wild.

Which of the following is another name for a nonnative species?

Non-native species can spread rapidly if they find a new location with favorable conditions, often because they do not face the same ____ that they face in their native niches.

Species that provide early warnings of damage to a community or an ecosystem are called ____.