Ecology levels and populations

What term best describes this group of bison?

• Species
• Community
• Ecosystem
• Population

What term best describes all the plants and animals in this image?

• Species
• Population
• Ecosystem
• Community

This image shows both living and non living things in an area.  What term best describes this?

• species
• community
• population
• ecosystem

The ___________ is all the area on and around earth where living things exist.

• Biome
• Biosphere
• Ecosystem
• Ecosphere

Which of the following is an abiotic factor in an ecosystem?

• Plants
• Bacteria
• Soil
• Insects

Abby is walking to school with her best friend Jaylyn. They begin talking about everything they see including the ash trees, grass, weeds, ants, and people. They also notice how cold it is, how there are several large puffy clouds out, and how the sun is just starting to come up.  What level of organization are they discussing?

• community
• ecosystem
• biome
• biosphere

Antonio and Javier are astronauts in space looking back at Earth and discussing how all the life on Earth interacts with each other as well as the nonliving things. What level of organization are they discussing?

• A community
• A biome
• An ecosystem
• A biosphere

The image represents a population of organisms in a pattern of _____________ growth.

• logistic
• exponential

Both graphs represent different population growth models. In graph 1, there are no external factors acting on a population, What is the MOST likely factor causing the change in graph 2.

• maximum rate of a population

• elimination of genetic diversity

• the limitation of an available resource

Largest number of individuals of a population that the environment can support...  

• carrying capacity
• population crash
• lag phase
• mutualism