FLASHCARD - Biosphere

Front

What are abiotic factors in an ecosystem?

Back

Abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Examples include sunlight, temperature, water, and minerals.

Front

What were Earth's earliest life forms?

Back

Earth's earliest life forms were prokaryotes, which are single-celled organisms without a nucleus.

Front

What does the term 'biotic' refer to in the context of the biosphere?

Back

The term 'biotic' refers to the living or once-living parts of the biosphere, including all organisms such as plants, animals, fungi, and microorganisms.

Front

What is the atmosphere?

Back

The atmosphere is the layer of air surrounding the Earth, composed of gases such as carbon dioxide, oxygen, and water vapor.

Front

Define the biosphere.

Back

The biosphere is the global sum of all ecosystems, encompassing all living organisms and the parts of Earth where they exist, including land, water, and the atmosphere.

Front

What role does sunlight play in the biosphere?

Back

Sunlight is a crucial abiotic factor that provides energy for photosynthesis, which is the process by which plants and some microorganisms convert light energy into chemical energy.

Front

How do abiotic factors influence biotic factors in an ecosystem?

Back

Abiotic factors such as temperature, water availability, and soil nutrients can significantly influence the distribution, behavior, and survival of biotic factors (living organisms) in an ecosystem.

Front

What is the significance of prokaryotes in the history of life on Earth?

Back

Prokaryotes are significant because they are the oldest known life forms on Earth and played a crucial role in shaping the planet's early environment and atmosphere.

Front

What are some examples of biotic components in an ecosystem?

Back

Examples of biotic components include plants, animals, fungi, and bacteria.

Front

How does the atmosphere affect life on Earth?

Back

The atmosphere affects life on Earth by providing essential gases for respiration and photosynthesis, regulating temperature, and protecting organisms from harmful solar radiation.