Aria is studying plants in her science class. She learns that a plant is an organism that uses an outside energy source, such as the Sun, and produces its own food.

(a)  

all the living things and nonliving things in a given area.

(a)  

During a biology class experiment, Luna observed a process by which glucose, a sugar, is broken down into smaller molecules.

(a)  

In a school science project, Evelyn and Emma are studying a model of energy transfer that can show how the food chains in a community are interconnected.

(a)  

Mason observed that a lion in the wild cannot make its own food and gets energy by eating other organisms.

(a)  

In a forest ecosystem, Mason observes an organism that consumes the bodies of dead animals and the wastes produced by living creatures. What type of organism is Mason observing?

(a)  

Henry is studying a model that shows how energy flows in an ecosystem through feeding relationships.

(a)  

Michael is studying a model that shows the amount of energy available in each link of a food chain.

(a)  

Henry left a glass of water on the windowsill, and over time, he noticed the water level decreasing. This is an example of the process of a liquid changing to a gas at the surface of the liquid.

(a)  

Hannah noticed droplets forming on the outside of her cold drink glass. This is an example of the process by which a gas changes to a liquid.

(a)  

In a biology class, Arjun learned about the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things. What is this process called?

(a)  

water, in liquid or solid form, that falls from the atmosphere.

(a)  

During a biology class, Samuel learned about a series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP.

(a)