Ecology

Most common greenhouse gases are

• Carbondioxide

• Nitrogen

• Oxygen

• Sulphur

What is the original source of almost all energy in most ecosystems?

• carbohydrates

• sunlight

• water

• carbon

What is the term for each step in the transfer of energy and matter within a biological community?

• energy path

• food web

• trophic level

• food pyramid

What is a biome?

• • A type of climate

• • A large ecological area with distinct plant and animal groups

• • A specific species of plant

• A geological formation

Which biome is characterized by very low temperatures and permafrost?

• Temperate forest

• Tundra

• Savanna

• • Desert

What type of biome is a temperate deciduous forest?

• • Cold and dry

• • Constantly warm

• • Moderate temperatures with seasonal changes

• • Warm and wet

What is a major threat to biodiversity in all biomes?

• • Climate stability

• Invasive species

• • Natural disasters

• Increased precipitation

What is the primary producer in a marine biome?

• Fish

• Coral

• Seaweed

• Phytoplankton

The natural residence of every organism is known as:

• Biome

• Niche

• Habitat

• Habit

Shelford’s law of tolerance suggests that organisms with a wide tolerance limit for environmental factors show:

• 1. Narrow distribution with low population

• 1. Wide distribution with high population 

• 1. Wide distribution with low population 

• 1. Narrow distribution with high population