Life Science Review

A(n) __________ includes all living and non-living things in an environment. 

• population
• niche
• abitotic
• ecosystem

Which organism make their own food through the process of photosynthesis? 

• decomposer
• consumer
• herbivore
• producer 

How does energy enter a food chain? 

• sunlight
• soil 
• animals 
• invasive species 

When a mosquito bites you, you are the __________ and the mosquito is the  ____________.

• host, hostess
• parasite, host
• host, parasite
• prey, predator

If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease
• stay the same
• increase

Consider this food web: Where is the largest amount of energy found in this food web? (closer to the sun, the more energy)

• Hawk

• Grass

• Mouse

• Grasshopper

Which correctly describes an event in the carbon cycle?

• Animals take in carbon through respiration

• Plants release carbon through photosynthesis.

• Plants and animals release carbon through respiration (exhaling.)

• Plants and animals take in carbon through combustion.

Limiting factors are sometimes helpful because they can keep the population from getting too large.

• True
• False

Why do all organisms need nitrogen?

• To build proteins to live and grow

• To build phosphorus

• To make oxygen levels grow

• To help blood circulate better

Which is most likely the source of a stomach virus?

• Contaminated Water

• Polluted Air

• Lack of Exercise

• A tick bite