Q: The global biosphere includes all areas of what? Read this paragraph and choose the correct option from the provided answers: The global biosphere, which includes all areas that contain life, from the sea to the atmosphere. Choices: - study - geography - science - life A:
life

Q: What part of the plant is the main site of photosynthesis? Read this paragraph and choose the correct option from the provided answers: 30.4 Leaves Leaves are the main site of photosynthesis. A typical leaf consists of a lamina (the broad part of the leaf, also called the blade) and a petiole (the stalk that attaches the leaf to a stem). The arrangement of leaves on a stem, known as phyllotaxy, enables maximum exposure to sunlight. Each plant species has a characteristic leaf arrangement and form. The pattern of leaf arrangement may be alternate, opposite, or spiral, while leaf form may be simple or compound. Leaf tissue consists of the epidermis, which forms the outermost cell layer, and mesophyll and vascular tissue, which make up the inner portion of the leaf. In some plant species, leaf form is modified to form structures such as tendrils, spines, bud scales, and needles. Choices: - soil - root - stem - leaf A:
leaf

Q: Q: What do power plants burn to generate electricity? Read this paragraph and choose the correct option from the provided answers: Power plants and factories account for more than a quarter of fossil fuel use. Power plants burn fossil fuels to generate electricity. Factories burn fossil fuels to power machines. Choices: - nuclear fuel - biofuel - timber - fossil fuels A:
A: fossil fuels

Question: Q: What type of flowers offer no reward, such as nectar, to a male wasp? Read this paragraph and choose the correct option from the provided answers: Choices: - vines - perennials - roses - ophrys A:
Answer: ophrys

*Question*
Q: What is the name of the the most efficient possible engine? Read this paragraph and choose the correct option from the provided answers: An ideal engine, the most efficient theoretically possible, is called a Carnot Engine. Its efficiency is given by the following formula, where the temperatures are, respectively, the temperature of the exhaust environment and the temperature of the heat input, in Kelvins. In a Carnot engine heat is input and exhausted in isothermal cycles, and the efficiency is . In all real engines heat is lost to the environment, thus the ideal efficiency is never even close to being obtained. Choices: - excitation engine - diesel engine - ventilation engine - carnot engine A:
**Answer**
carnot engine

*Question*
Q: Biomass, solar, wind, water, and geothermal power are examples of what kinds of energy resources? Read this paragraph and choose the correct option from the provided answers: Renewable energy resources include solar, water, wind, biomass, and geothermal power. These resources are usually replaced at the same rate that we use them. Scientists know that the Sun will continue to shine for billions of years. So we can use the solar energy without it ever running out. Water flows from high places to lower ones. Wind blows from areas of high pressure to areas of low pressure. We can use the flow of wind and water to generate power. We can count on wind and water to continue to flow! Burning wood ( Figure below ), is an example of biomass energy. Changing grains into biofuels is biomass energy. Biomass is renewable because we can plant new trees or crops to replace the ones we use. Geothermal energy uses water that was heated by hot rocks. There are always more hot rocks available to heat more water. Choices: - mechanical - electrical - fossil fuel - renewable A:
**Answer**
renewable