Answer the following question given this paragraph: Adolescence includes the physical changes of puberty among other changes. Q: Puberty and other physical changes occurs during which stage of development? Choices: - childhood - infancy - adulthood - adolescence A:
adolescence
Answer the following question given this paragraph: 47.2 The Importance of Biodiversity to Human Life Humans use many compounds that were first discovered or derived from living organisms as medicines: secondary plant compounds, animal toxins, and antibiotics produced by bacteria and fungi. More medicines are expected to be discovered in nature. Loss of biodiversity will impact the number of pharmaceuticals available to humans. Crop diversity is a requirement for food security, and it is being lost. The loss of wild relatives to crops also threatens breeders' abilities to create new varieties. Ecosystems provide ecosystem services that support human agriculture: pollination, nutrient cycling, pest control, and soil development and maintenance. Loss of biodiversity threatens these ecosystem services and risks making food production more expensive or impossible. Wild food sources are mainly aquatic, but few are being managed for sustainability. Fisheries' ability to provide protein to human populations is threatened when extinction occurs. Biodiversity may provide important psychological benefits to humans. Additionally, there are moral arguments for the maintenance of biodiversity. Q: Humans use many compounds that were first discovered or derived from living organisms as medicines: secondary plant compounds, animal toxins, and antibiotics produced by these? Choices: - bacteria and tumors - molecules and fungi - tumors and fungi - bacteria and fungi A:
bacteria and fungi
Q: Answer the following question given this paragraph: An acid is an ionic compound that produces positive hydrogen ions when dissolved in water. Acids taste sour and turn blue litmus paper red. Q: What is the term for an ionic compound that produces positive hydrogen ions when dissolved in water? Choices: - hydrocarbon - sulfur - base - acid A:
A: acid
Question: Answer the following question given this paragraph: About half the energy used in the U. S. is used in homes and for transportation. Businesses, stores, and industry use the other half. Q: Homes and transportation use what percent of all energy in the u.s.? Choices: - twenty five - fifteen - forty - half (fifty) A:
Answer: half (fifty)
*Question*
Answer the following question given this paragraph: Force is a vector, or a measure that has both size and direction. For example, Colton pushes on the ground in the opposite direction that the scooter moves, so that's the direction of the force he is applies. He can give the scooter a strong push or a weak push. That's the size of the force. Like other vectors, a force can be represented with an arrow. You can see some examples in the Figure below . The length of each arrow represents the strength of the force, and the way the arrow points represents the direction of the force. Q: What is a measure that has both size and direction? Choices: - length - velocity - wave - vector A:
**Answer**
vector
(Q).
Answer the following question given this paragraph: The oval window passes the vibrations to the cochlea . The cochlea is filled with liquid that moves when the vibrations pass through, like the waves in water when you drop a pebble into a pond. Tiny hair cells line the cochlea and bend when the liquid moves. When the hair cells bend, they release neurotransmitters. Q: What do the hair cells in the cochlea release when they bend? Choices: - receptors - hormones - lipids - neurotransmitters A:
(A).
neurotransmitters