What is the purpose of research and experiments?

The scientific method helps remove people's opinions from scientific texts.

Abiotic and biotic factors affect the movement of matter through an ecosystem.

Check all the biotic factors.

What are the processes involved in the carbon cycle?

Matter moves through ecosystems via the ______ cycles.

The amount of energy available ___________ from producer to first order, second order, and third order consumers.

Which are social behaviors animals have to help them get what they need to survive?

The hypothesis statement must be testable.

Populations interact and are _____ with other populations in a community.

Limiting factors can _____. (Select all that apply).

Many limiting factors affect the growth of populations in nature.

_____ is a relationship between organisms that strive for the same resources in the same place.

The organisms that do not win the resource are more successful in their environment, survive and reproduce.

The availability and use of resources may lead to competition and cooperation.

What is mutualism?

What is commensalism?

What is parasitism?

What is a habitat?

The climate has a large impact on what types of plants and animals can occupy the environment.

What is a niche?

An organism's niche _____ how the organism interacts with other organisms.

Biosphere means _________.

Geosphere means

Hydrosphere means

Atmosphere means

Living organisms have physical characteristics that increase their survival in their environment.

Animals that live with other members of their species are called _____ animals.

The reaction a stimulus produces is called a _____.

Dormancy occurs when normal physical functions are sped up or activated.

A _____ is a roughly 24-hour cycle in the physiological processes of living things.

Which of the following statements is true?

The decreased population of blue crabs in the Chesapeake Bay is primarily the result of _____

Pollution can be from _____.

Harmful mutations may cause genetic disorders or cancer.

Larger beaks in birds have evolved over time to allow the birds to eat larger prey. What type of mutation is described in this example?

Overtime, scientist discovered that ______ is the genetic factor that controls heredity.

Although individuals within a population have the same basic physical characteristics, close examination will reveal _____ for a given trait.

Fossil evidence _____ provide information about how organisms have changed over time.

A change in one part of the system _____ other parts of the system.

Long-term changes affect communities and ecosystems. As conditions change, _____ respond to those changes to survive. (Select all that apply.)

Large-scale changes that influence ecosystems include _____. (Select all that apply.)

_____ is the permanent removal of trees to make room for something else.

Clearing land for agriculture and development is a _____ cause of habitat change and population disturbance.

Changes in the interactions among the _____ components of an ecosystem cause change in the system.

Humans are a natural part of the ecosystem.

a group of individuals that are genetically related and can breed to produce fertile young

a group of organisms belonging to the same species that live in the same area and interact with one another

all of the populations of different species that live in the same area and interact with one another

the living organisms in an area and the non-living aspects of the environment

As the population numbers increase, there is _____ level of competition.

Plants compete with one another from the start of life.

Air pollution particles come from human-caused sources such as _____. (Select all that apply.)

_____ is a general term for the number of species present in the biosphere, by taking into account both the number of species and their relative abundance to each other.

The interaction of humans with the dynamic ecosystem may lead to "positive" changes in climate, water supply, air quality, energy production, ocean acidification, and waste management.

Which of the following are bases within DNA? Select all that apply.

A series of contributions and discoveries has led to our current understanding of DNA, genes, chromosomes, and traits which illustrates the nature of science.

DNA has a role in making _____ that determine organism traits.

_____ are sections of a chromosome that carry the code for a particular protein.

DNA is condensed into ______ to prepare for cellular division.

Living organisms must reproduce to continue the existence of their species.

All the organisms alive today arose from preexisting organisms

The environment does not influence the expression of traits.

Traits that are expressed through genes can be inherited.

Genes are the basic unit of heredity.

The Punnett square is a mathematical model that predicts the probability of the genotype (genetic makeup) and phenotype of the offspring of a cross between parents.

As habitats change, some organisms _____. Select all that apply.

Most organism extinctions are due to _____.

Changes in the DNA sequence are called _____.

Adaptation makes the organism better suited to _____ in its environment.

The theory of evolution is a shared understanding that encapsulates our current understanding of how biological systems change over time.

The ______ of fossils provide evidence of what organisms were present during a given time period.