Question

1. a hypothesis states, \cars with very aggressive tire tread will stop sooner than cars with less - aggresstire tread.\identify the dependent variable.a. breaksb. tire treadc. time it takes to stop the card. car26. \our data showed that out of 50 cars tested, cars with more aggressive tread were able to stop fasterthan cars with less - aggressive tread more often. overall, cars with aggressive tread stopped faster than tireswith non - aggressive tread 85% of the time.\which part of the scientific method does this statement belong to?a. datab. experimentc. hypothesis d. conclusion27. ecological pyramids show that energy and population sizes ______ when moving up thepyramid.a. decreaseb. increasec. are equal d. don’t change

Explanation:

• Question 25: A dependent variable is what is measured in an experiment. Here, the time it takes to stop the car (option c) is what is being measured based on tire tread (the independent variable).
• Question 26: The statement presents results from testing (e.g., "out of 50 cars tested...85% of the time"), which is data (option a).
• Question 27: In ecological pyramids, as you move up the pyramid (from producers to higher - level consumers), energy and population sizes decrease (option a) due to energy loss at each trophic level (e.g., only about 10% of energy is transferred to the next level).

Answer:

1. c. time it takes to stop the car
2. a. Data
3. a. decrease