Q: What basic plant structures generally have large surface areas and high surface-to-volume ratios? Read this paragraph and choose the correct option from the provided answers: Choices: - roots - stems - flowers - leaves A:
leaves

Q: What form of matter has neither a definite shape nor a definite volume? Read this paragraph and choose the correct option from the provided answers: A gas is a form of matter that has neither a definite shape nor a definite volume. A gas takes up the shape and volume of its container. This is because the particles of a gas are very far apart from one another compared to the particles that make up solids and liquids. Gases are easily compressed because of the large spaces in between gas particles. Gas particles are often invisible, but they can be detected in various ways, such as the light emitted when an electric current is passed through a sample of a gas ( Figure below ). Choices: - plasma - solid - liquid - gas A:
gas

Q: Q: In vascular plants, the sporophyte generation is what? Read this paragraph and choose the correct option from the provided answers: In vascular plants, the sporophyte generation is dominant. Choices: - non-existant - submissive - resting - dominant A:
A: dominant

Question: Q: Controlled variables are kept what to prevent them from influencing the effects of the independent variable on the dependent variable? Read this paragraph and choose the correct option from the provided answers: Scientific experiments involve controls , or subjects that are not tested during the investigation. In this way, a scientist limits the factors, or variables that can cause the results of an investigation to differ. A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine their relationship with an observed phenomenon. Dependent variables are the observed phenomenon, and change in response to the independent variable. Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent them from influencing the effect of the independent variable on the dependent variable. Choices: - mechanical - temporary - fleeting - constant A:
Answer: constant

*Question*
Q: What is already causing food and water shortages and species extinctions? Read this paragraph and choose the correct option from the provided answers: Adding more heat energy to Earth's atmosphere also causes more extreme weather and changes in precipitation patterns. Global warming is already causing food and water shortages and species extinctions. These problems will only grow worse unless steps are taken to curb greenhouse gases and global climate change. Choices: - urbanization - immigration - zero population growth - global warming A:
**Answer**
global warming

Q: Q: What is produced when sulfur and oxygen combine? Read this paragraph and choose the correct option from the provided answers: Sulfur oxides are produced when sulfur and oxygen combine. This happens when coal that contains sulfur burns. Choices: - Acidic oxides - hydrogen oxide - Basic Oxides - sulfur oxide A:
A: sulfur oxide