If you teach a man to fish, he will never go hungry—or he will overfish and permanently damage the ecosystem? Address the traditional biomes as well as the human-included ecosystems and contrasts the biotic and abiotic factors in each....

Students construct a viable insect collecting apparatus. Students determine the effectiveness of the instrument he has designed by collecting specimens.

This unit on ecosystem dynamics and biodiversity begins with students reading headlines that claim that the future of orangutans is in peril and that the purchasing of chocolate may be the cause. Students launch a scientific...

Population in areas is most often determined by environmental factors. This video and the test will help ensure understanding of the trends of population growth with scientific evidence.

What happens to a population when the environment changes? Students remove a dam that divides an ecosystem to illustrate the effects of environmental changes. Students observe and collect data as the grass and then the rabbit populations...

Explore biotic and abiotic factors that can influence the growth of populations of organisms in this interactive tutorial.

In this simulation, students build a dam in the middle of a field, dividing an ecosystem in half to illustrate the effects of environmental changes. They watch and collect data as the grass and then the rabbit populations in that region...

An ecosystem is composed of biotic factors of a community of living organisms interacting with one another which we can see in food chains/webs. These diverse organisms stay together because of the need of food. Population is referred to...

This lesson will describe the properties of populations. It is 3 of 8 in the series titled "Population."

This lesson will describe the properties of populations. It is 4 of 8 in the series titled "Population."

"Changing the Ecosystem: Q & A" is a one page, nonfiction, reading passage about how the loss of the prairie to farming and population growth impacts the ecosystem. It is followed by questions which require students to provide...

The abundance and distribution of organisms in an ecosystem is determined by biotic and abiotic factors. Animals and plants have adaptations to allow them to compete for resources.

Go on a mission to Costa Rica and Mexico, and explore the state of tropical rain forest ecosystems by examining Costa Rican caterpillars. Learn what the change in this animal's population means for the rest of the ecosystem.

Students review the study of living things and make connections back to Earth's systems. This unit focuses on how various species, grouped in populations and communities, work with the nonliving things around them to ensure survival.

Bobbi Seleski catalogs biology from our body and beyond, tracking how unicellular organisms, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and our biosphere build off of each other and work together....

The concept of interdependence in an ecosystem and its effect on the evolution of populations is further explored through a model of a dam. Students build a dam in the middle of the field, dividing the ecosystem in half to illustrate the...

[Free Registration/Login may be required to access all resource tools.] Ecosystems are organized into several different levels, and they can be studied at any one of the various levels of organization. Learn more about levels of...

Are harbour seal populations endangered? What role does the harbour seal play in the ecosystem? How does the harbour seal reproduce? Find the answers to these questions and more in this enlightening site.

A suite of lessons focusing on the process of upwelling. Inquiry-based exploration of seasonal upwelling includes marine food webs, food production in the ocean, wind-driven ocean currents, and seasonal changes in biotic and abiotic...

Learn how organisms rely on one another but also compete with one another within the same ecosystem.

Selected (8) reading passages (grades 6-10) to pair with "World Without Fish" by Mark Kurlansky. Mark Kurlansky discusses how humans treat the oceans and the fish that live in them, and what the world will likely look like if fish...

Our planet was once populated by megafauna, big top-of-the-food-chain predators that played their part in balancing our ecosystems. When those megafauna disappear, the result is a "trophic cascade," where every part of the ecosystem...