Planet Earth and Beyond
Life's Balancing Act
Counting Creatures
Neighborhood Watch
Science potpourri
100

These types of factors include living organisms like plants, animals, and bacteria.

What are biotic factors?

100

In a food web, this type of organism is at the top and has no natural predators.

What are apex predators (tertiary consumers)?

100

This type of limiting factor increases in effect as population density increases.

What are density-dependent limiting factors?

100

This type of symbiosis benefits both organisms involved.

What is mutualism?

100

This is the largest human organ.

What is the skin?

200

This term refers to the long-term average of temperature and precipitation in a region.

What is climate?

200

This term describes organisms that obtain energy by consuming other organisms.

What are consumers (heterotrophs)?

200

This type of population distrobution has organisms spread out evenly away from one another.

What is uniform distrobution?

200

This zone lies between the optimal range and the zone of intolerance.

What is the zone of physiological stress?

200

This is the current number of elements on the periodic table of elements.

What is 118?

300

This biome is known for its high biodiversity and year-round warm temperatures.

What is a rainforest?

300

This nutrient cycle involves bacteria that convert nitrogen gas from the atmosphere into forms usable by plants.

What is the nitrogen cycle?

300

Carrying capacity describes this.

What is the maximum number of individuals an environment can sustainably support?

300

This type of succession occurs in areas where a disturbance has left soil intact.

What is secondary succession?

300

This is the largest desert in the world.

What is Antarctica?

400

This level of organization encompasses multiple ecosystems with similar climates and organisms.

What are biomes?

400

Energy pyramids always narrow toward the top due to this reason.

What is because energy is lost as heat at each trophic level?

400

On a logistic growth graph, this is the shape of the graph.

What is an s-shape?

400

This is the reason microhabitats are important for biodiversity.

What is they provide specialized niches that support different organisms?

400

This animal kills the largest number of humans per year (this is the deadliest animal on earth.)

What is a mosquito?

500

This is the reason the Southern Hemisphere experience summer while the Northern Hemisphere experiences winter?

What is the tilt of the Earth's axis?

500

Decomposers play a crucial role in nutrient cycles by doing this.

What is recycling nutrients back into the environment?

500

Read this short paragraph....

Mr. Dorsey wants to know how many kangaroos live in Australia. He sets out a trap for a week and captures 20 kangaroos and marks them. A week later he sets out a new trap. He comes back after a week and finds 30 kangaroos, 15 are marked.

This number describes how many kangaroos are in Australia.

What is 40 kangaroos?

500

This is the reason keystone species crucial for maintaining biodiversity.

What is they help regulate populations and maintain the structure of the ecosystem?

500

This is the name Of the first American in space.

Who is Alan Shepard?