Biology Unit 1 test - 2nd semester
Crab Jubilee
"dead zones" where oxygen is depleted > causes an organism to move now exposed on the surface "overfishing"
Carnivore
A consumer that eats only animals.
Herbivore
A consumer that eats only plants.
Chaparral
A scrubland biome of dense, spiny evergreen shrubs; characterized by mild, rainy winters and long, hot, dry summers.
Omnivore
An animal that eats both plants and animals
Hypothesis
An educated guess
Tundra
An extremely cold, dry biome without many living organisms.
Desert
An extremely dry area with little water and few plants
Decomposer
An organism that breaks down wastes and dead organisms
Fishing limits
Attempts to control consumption; creating laws that limit the number or size of fish that can be caught to ensure that young fish survive long enough to reproduce.
Geography
Earth's physical features - mountains, grasslands, plateaus, rock formations, tree cover, freshwater, sea water, altitude
Natural causes of change to an ecosystem
Erosion, fire, floods
Theory
Evidence that shows up in the same way consistently; pulls data from many years
If you have 5 plants today and 4 plants tomorrow, will your ecosystem be sustainable?
No
March of the Toads
Cane reptiles ate insects and other creatures causing a decrease in the biodiversity of the local habitat
What distinguishes one biome from another?
Climate and geography
autotroph
Organisms that make their own food
Artificial causes of change to an ecosystem
Pollution (car pipes, coal usage, trash); Deforestation (Cutting trees for paper, land development)
What trophic level would rabbits be on?
Primary consumers
What trophic level would flowers be on?
Producers
nonnative species
Species that migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem by humans. They may be invasive, disrupting the ecosystem, causing harm to existing organisms
Different Biomes
Temperate grasslands, Savanna, Chaparral, Desert, tropical rain forest, Taiga, Tundra, Temperate deciduous forest.
What trophic level would Lions be on?
Tertiary consumers
Organisms at the first trophic level are ______.
producers
Organisms at the third trophic level are
secondary consumers
Abiotic examples
snow, rain, sleet, hail, temperature, water, humidity, rock, dirt, sand, seashells, oxygen, clouds
Organisms at the fourth trophic level are ______.
tertiary consumers (predators)
Sustainable ecosystem
what it has today it has tomorrow
Organisms at the second trophic level are ______.
primary consumers
temperate deciduous forest
A biome characterized by trees that shed their leaves in the fall. Vegetation changes with the seasons because of the temperature.
Bleaching of the reefs
When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white.
If you have 6 food sources today and 6 food sources tomorrow, will your ecosystem be sustainable?
Yes
temperate grassland
a biome that is dominated by grasses, has few trees, and is characterized by cold winters and rainfall that is intermediate
tropical rainforest
a broadleaf evergreen biome found in wet and hot regions near the equator.
Savanna
a grassy plain in tropical and subtropical regions, with few trees.
Detrivore
a scavenger, such as an earthworm, that feeds on dead plant and animal matter (scraps)
Tertiary Heterotrophs
organisms that eat other carnivores or omnivores
secondary Heterotrophs
organisms that eat primary heterotrophs
Ecosystem
physical space that organisms exist and interact in
Taiga
biome with long cold winters and a few months of warm weather; dominated by coniferous evergreens
Biotic Examples
plants, animals, fungi, bacteria
Tragedy of the Commons
describes a situation where shared environmental resources are overused and exploited, and eventually depleted, posing risks to everyone involved.
climate
different kinds of weather - temperature, rainfall, humidity
Biomes
different types of places where organisms live
Yellow Stone Fires
largest wild burn in the recorded history of one of the US National Parks
