Wind and solar energy are examples of
scarce resources.
renewable resources.
expensive resources.
nonrenewable resources.

Wind and solar energy are examples of *renewable resources* Unlike coal or gasoline which is used up when it is burned, wind and solar energy are always there to use again and again. The wind will always keep blowing and the sun will always keep shining (except for a cloudy day) so they are renewable resources.

Wind and solar energy are examples of renewable resources

Further Explanation

Available resources in nature can be classified into renewable resources and non-renewable resources.  

Renewable resources  These are energy sources that are replenished naturally within short periods of time. Renewable resources are more convenient and desirable to use because they renew faster and therefore there is continuous regeneration with use. Renewable resources are therefore, inexhaustible as they cannot be exhausted permanently as they are continuously supplied by nature. Examples of renewable resources include; wind, solar, water, biomass and geothermal. Solar energy is a renewable resource as the sun will shine through out. Wind energy is another renewable resource as wind cannot be stopped from blowing. Geothermal energy is also a renewable energy that generates heat from the earth. Other examples of renewable resources include bio-fuels, fuels that are obtained from living organisms. Nonrenewable resources. These are resources that are available only in limited supply. Nonrenewable resources include; coal, natural gas, oil, and nuclear power. Nonrenewable cannot be replenished like renewable resources and are exhaustible as they are not continuously replenished by nature. Nonrenewable resources are scarce resources and are not abundantly available in nature. Additionally, they are costly and not easily available.  Despite the importance use of nonrenewable resources, they have various negative impact on the environment, such that they pollute the atmosphere by releasing various pollutants in air when burned.  

Keywords: Resources, renewable resources, nonrenewable resources

Learn more about Renewable resources: Nonrenewable resources: Impact of nonrenewable resources on environment:

Level: High school  

Subject: History  

Topic: Renewable and nonrenewable resources  

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

Answerit increases at a steady rate;