Answer the following question given this paragraph: Scientific theories are explanations of some aspect of the natural world based on repeated observations. Q: Explanations of some aspect of the natural world based on repeated observations are termed what? Choices: - scientific insights - scientific thoughts - scientific guesses - scientific theories A:
scientific theories
(Question)
Answer the following question given this paragraph: Sponges reproduce both asexually and sexually. Asexual reproduction occurs by budding. Sexual reproduction occurs by the production of eggs and sperm. Males release sperm into the water through the osculum. Sperm may enter a female sponge through a pore and fertilize her eggs. The resulting zygotes develop into larvae. Q: Budding in sponges is a form of what type of reproduction? Choices: - sexual - reasonable - competitive - asexual A:
(Answer)
asexual
Ques: Answer the following question given this paragraph: Q: What creates charged regions in a water molecule? Choices: - nonpolar bonds - ionic bonds - noncovalent bonds - polar covalent bonds A:
Ans: polar covalent bonds
(Q).
Answer the following question given this paragraph: Common diseases of the respiratory system include asthma, pneumonia, and emphysema. All of them are diseases of the lungs. The main way to keep your respiratory system healthy is to avoid smoking or breathing in the smoke of others. Q: Common disease of what system include asthma, pneumonia, and emphysema? Choices: - the fecal system - the digestive system - the glandular system - the respiratory system A:
(A).
the respiratory system
Ques:Answer the following question given this paragraph: Concentration is the number of particles of a substance in a given volume. When the concentration of reactants is higher, the reaction rate is faster. At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. Did you ever see a sign like the one in the Figure below ? You might see it where someone is using a tank of pure oxygen for a breathing problem. Combustion, or burning, is a chemical reaction in which oxygen is a reactant. A greater concentration of oxygen in the air makes combustion more rapid if a fire starts burning. Q: What kind of reaction do you see when the concentration of reactants is higher? Choices: - regular reaction rate - slow reaction rate - constant reaction rate - faster reaction rate A:

Ans:faster reaction rate
Ques:Answer the following question given this paragraph: Most of the organisms that once lived on Earth are now extinct. Earth's environment has changed many times. Many organisms could not adapt to the changes. They died out. The organisms that did survive passed traits on to their offspring. The changes added up, eventually producing the species we see today. Q: Species of organisms that have permanently died out can also be called what? Choices: - succinct - inherited - occuring - extinct A:

Ans:
extinct