Unit 1 Env. Science Test

How does energy flow through an ecosystem?

• it evaporates 
• it transfers from one organism to the next
• it transfers but stops when the top predator dies
• it cycles through abiotic and biotic factors

Which of the following are abiotic?

• rocks, trees, water, sand
• cows, rabbits, deer
• plants, air, sunlight
• sunlight, temperature, rocks

Which of the following is TRUE?

• Abiotic is living and Biotic is nonliving
• Abiotic is nonliving and Biotic is living

Trees and plants are

• Biotic
• Abiotic

Which of the following is true of food webs?

• It's made of separate food chains so if an animal dies it won't affect anything 
• All organisms are connected if one organism dies, the rest of the food web will be affected

Which trophic level does all energy originate?

• Primary Consumers
• Producers
• Secondary Consumers
• Top Consumers

Which trophic level has the least amount of energy available to it?

• producer
• Primary Consumer
• Top predator
• Secondary consumer

Which of the following correctly lists the ecological levels of organization in order from least complex to most complex?

• Biome, community, ecosystem, population
• Population, Community, Ecosystem, Biomes
• Ecosystem, populations, biomes, community
• Community, Biome, Ecosystem, Population

What is the Law of Conservation of Mass?

• Mass and matter can neither be created nor destroyed, only recycles
• Mass can be created in a chemical reaction only
• Mass cannot be created by can be destroyed using nuclear fission

What role does bacteria play in the nitrogen cycle?

• Nitrogen can convert to bacteria
• Bacteria produces nitrogen
• the bacteria makes nitrogen poisonous
• They do nitrogen fixation to convert nitrogen into an usable form