KSA Science Test Prep V- Ecosystems, Atomic Structure, EDP

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (air, water, soil) in a specific area.

Front

What happens to the population of grass/flowers if there is a sudden increase in the cricket population?

Back

There would be a decrease in the grass/flowers population due to increased herbivory by crickets.

Front

What is the first step in the Engineering Design Process?

Back

The first step is to ask questions to identify the problem that needs to be solved.

Front

What is a prototype?

Back

A prototype is a preliminary model of something from which other forms are developed or copied.

Front

What does the atomic number of an element represent?

Back

The atomic number of an element equals the number of protons in an atom of that element.

Front

What is a balanced ecosystem?

Back

A balanced ecosystem is one where the populations of different species are stable and in equilibrium, allowing for sustainable interactions.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

What is the difference between a food chain and a food web?

Back

A food chain shows a linear sequence of energy transfer between organisms, while a food web illustrates the complex interconnections between multiple food chains in an ecosystem.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil, which supports plant growth.

Front

What is the definition of mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.