Ques: Q: If a machine only changes the direction of a force without changing the ratio of the output/input forces, then what is its associated mechanical advantage? Read this paragraph and choose the correct option from the provided answers: For machines that change only the direction of the force, such as the rope systems on flagpoles, the output force is the same as the input force. Therefore, the mechanical advantage is equal to 1. Choices: - 4 - 1.5 - 2 - 1 A:
Ans: 1

Ques: Q: Aquatic biomes are determined mainly by distance from shore and what other factor? Read this paragraph and choose the correct option from the provided answers: Aquatic biomes are determined mainly by depth of water and distance from shore. They include freshwater and marine biomes. Choices: - water temperature - salinity - species populations - depth of water A:
Ans: depth of water

Ques: Q: Which three colors are called the primary colors of light? Read this paragraph and choose the correct option from the provided answers: The human eye can distinguish only red, green, and blue light. These three colors are called the primary colors of light. All other colors of light can be created by combining the primary colors. Look at the Venn diagram below . Red and green light combine to form yellow light. Red and blue light combine to form magenta light, and blue and green light combine to form cyan light. Yellow, magenta, and cyan are called the secondary colors of light. Look at the center of the diagram, where all three primary colors of light combine. The result is white light. You can explore the colors of visible light and how they combine at this URL: http://www. phy. ntnu. edu. tw/oldjava/color/color_e. html. Choices: - red, blue, yellow - black, white, red - blue, green, violet - red, green, blue A:
Ans: red, green, blue

Ques: Q: Fungi reproduce asexually by fragmentation and either sexually or asexually via what lightweight, windblown structures? Read this paragraph and choose the correct option from the provided answers: 23.25 Fungal Reproduction Fungi can reproduce in two ways. Firstly, they make asexually produce through fragmentation. This occurs when pieces of hyphae are broken off, which then grow into new mycelia. The second method is by spores. Spores are lightweight structures and windblown designed to be transported over long distances and by many mediums, such as on the bodies of insects and birds. They are additionally light enough to be blown away for hundreds of kilometers. Spores may be asexual and sexual. Their sexual properties can be analysed to classify the four phylla of fungi. Choices: - lesions - seeds - ions - spores A:
Ans:
spores