Bio 1 Semester 1 Review

Front

Which is an abiotic factor?

Back

An ocean current of cold water.

Front

What might be happening when a population stops increasing and begins decreasing?

Back

The number of births is less than the number of deaths, and emigration exceeds immigration.

Front

What happens when a population nears carrying capacity?

Back

Resources become scarce.

Front

A(n) ______ collects energy from sunlight or inorganic substances to produce food.

Back

Autotroph.

Front

In the nitrogen cycle, which type of organisms break down nitrogen compounds in dead organisms and recycle them into the soil?

Back

Bacteria.

Front

Define abiotic factors.

Back

Non-living chemical and physical parts of the environment that affect living organisms.

Front

What is carrying capacity?

Back

The maximum population size that an environment can sustain indefinitely.

Front

What is the role of autotrophs in an ecosystem?

Back

They produce food through photosynthesis or chemosynthesis, forming the base of the food chain.

Front

Explain the nitrogen cycle.

Back

The process by which nitrogen is converted between its various chemical forms, involving nitrogen fixation, nitrification, and denitrification.

Front

What is the difference between emigration and immigration?

Back

Emigration is the movement of individuals out of a population, while immigration is the movement of individuals into a population.