Everyone's World - What YOU Need to Know re Your Environment

Explore how conifer identification by needles and bark shapes habitats and food chains, and collect regional photos to map predator–prey relationships.

Explore deciduous hardwood trees through leaf and bark features, including maple, oak, and trembling aspen, to identify species and understand their role in forests and wood use.

Explore how plants capture solar energy to form biomass and provide habitat and food. Learn how insects perform pollination, waste breakdown, and serve as animal protein sources in food chains.

Explore a diverse array of freshwater fish, amphibians, and reptiles, from muskellunge and sturgeon to bullfrogs and garter snakes, highlighting habitats, behaviors, and indicators of climate change.

Explore how birds and small mammals form essential links in food chains, connecting plants, insects, and larger animals through diverse diets.

Explore medium-size and large mammals, from porcupine to moose, their diets and habitats, and how they interact with humans, predators, and prey. Build food chains across forests, rivers, and wetlands.

Create and analyze own food chains using local plants and animals, including insects, identifying who eats whom across terrestrial and aquatic contexts, and begin building food webs.

Explains matter as solid, liquid, gas and introduces atoms, molecules, elements, and compounds; demonstrates the conservation of matter with balanced chemical equations and real‑world implications like carbon dioxide formation.

Explore the relationship between photosynthesis and cellular respiration, showing how solar energy powers plants to make sugar and oxygen, while animals return CO2 and water, illustrating the conservation of matter.

Explore how water cycles through the environment as a key matter cycle, detailing evaporation, transpiration, condensation, precipitation, runoff, infiltration, percolation, and groundwater movement.

Explore biogeochemical cycles, focusing on the phosphorus cycle and sulfur cycle as key macronutrients, and build a six-step memory model linking weathering, leaching, and aquatic food webs to pollution.

Explore what energy is, its types—mechanical, chemical, electrical, and nuclear—and how the first law of energy conservation describes energy changing form from potential to work or heat.

Explore how energy degrades as it transfers from higher to lower quality, from visible light to heat, and apply conservation of energy and matter to ecosystems.

Explore the study of ecology, linking abiotic and biotic components to ecosystems and the biosphere, and examine how human activities disrupt or sustain natural environments.

Explore biotic components of ecosystems by identifying producers, grazing and detritus food chains, macroconsumers, microconsumers, and distinguishing autotrophs, heterotrophs, herbivores, carnivores, omnivores, detritus feeders, and decomposers.

Explore how decomposition completes food chains by recycling nutrients from detritivores and decomposers back to plants. See how matter and energy move through producers and consumers across trophic levels.

Energy flows through food chains, while matter cycles; about 90% is lost as heat at each trophic step, with 10% passing to the next level, forming energy pyramids.

Draw a local food web using trophic levels, arrows for predator–prey relationships, and nutrient cycling through decomposers. Build from a Thanksgiving example to model your own ecosystem.

Examine key ecological terms—range, home range, territory, habitat, and niche—through species examples, and discover how overlap, defense, and excursions shape animal space use.

Explore the competitive exclusion principle with examples like bobcats and lynx, chipmunks, and squirrels, showing how species partition niches to avoid competition.

Explore competition, natural selection, and evolution, including inter-specific and intra-specific competition. See how directional, stabilizing, and diversifying selection shape species and biodiversity.

Explore how optimum temperature ranges shape chemical reactions and animal physiology, distinguishing poikilotherms and homeotherms, and how insulation and behavior expand the thermal neutral zone for efficient energy use.

Explore optimum ranges and limiting factors across environmental conditions, from temperature and oxygen to pH and salinity, highlighting zones of intolerance, a zone of physiological stress, and the optimum range.

Explore how biomes form from vegetation responses to moisture and temperature, and how altitude and latitude shape forest zones, with indicator species guiding biome identification in your region.

Explore how ecosystems recover and change through primary and secondary succession, from bare rock to climax forests, and learn where tertiary succession fits restoration.

Explore how altering the phosphorus cycle speeds up biogeochemical cycles, causing algae blooms from added phosphates and oxygen depletion in lakes and rivers.

Explore how solar energy drives Earth's energy systems and shapes heat, wind, and food chains. Learn the roles of the ozone layer and greenhouse gases in regulating climate.

Explore how disrupting different trophic levels—from producers to decomposers—affects food webs, nutrient flow, and overall ecosystem balance.

Eliminating or introducing species can destabilize ecosystems. Endangered species and diminishing biodiversity illustrate how invasive examples like sea lamprey, zebra mussel, and spiny water flea disrupt local ecosystems.

Biomagnification of fat-soluble chemicals raises doses up the food chain, illustrated by DDT from phytoplankton to osprey, with the energy pyramid showing pollution is not diluted.

Explore chemical time bombs that trigger delayed, sudden harms from long-forgotten wastes in soils. Learn from Love Canal and Sydney Tar Ponds and groundwater risks in unconfined and confined aquifers.

Explore the inevitability of nuclear accidents and the risks of wars or terrorism near power plants, compare reactor designs, and evaluate fusion and renewables as alternatives.

Explore how monocultures create vulnerability in food crops and pests, and examine safer, reduced pesticide use and how diverse ecosystems can improve future food production.

Explore wetlands, biomes, and food webs, and learn scientific, political, and ethical solutions to environmental issues while developing information literacy and opportunities for future learning.