Weegy: A dependent variable is what you measure in the experiment and what is affected during the experiment. User: A group of scientists are studying the effects of different fertilizers on the growth of pea plants. They began their study with 10 pea plants. They gave each plant a different type of fertilizer and tracked their growth over a period of 2 months. The results of this experiment weren’t considered valid by other scientists because there was no control group. Which of the following represents an appropriate control group for this experiment? A. A group of plants that’s not subjected to any fertilizer B. A group of plants that’s subjected to one fertilizer C. A group of plants that’s subjected to two fertilizers D. A group of plants that’s subjected to all types of fertilizers (More)

Weegy: Chemical bonds: hold atoms together to form compounds. User: Ecology involves the study of all of the following except for the interactions between A. atoms. B. populations. C. individual organisms and their environment. D. individual organisms. Weegy: Ecology involves the study of all of the following except for the interactions between: ATOMS. User: All of the following would result in a change in population size except A. emigration of individuals out of the population range. B. immigration of individuals into the population range. C. the death rate exceeding the birth rate. D. equal birth and death rates. Weegy: All of the following would result in a change in population size except equal birth and death rates. User: An open-minded scientist does all of the following except A. question existing ideas. B. hold on to his or her beliefs even if there is no evidence for those beliefs. C. think creatively to design experiments. D. ask questions about observations. Weegy: An open-minded scientist does all of the following except hold on to his or her beliefs even if there is no evidence for those beliefs. User: Compared to atoms of the same element, isotopes have different A. numbers of neutrons. B. types of subatomic particles. C. numbers of electrons. D. numbers of protons. Weegy: Compared to atoms of the same element, isotopes have different numbers of neutrons. User: What makes the phosphorus cycle different from the carbon cycle? A. Phosphorus relies on phosphorus-fixing bacteria to make it usable by plants. B. Phosphorus is not abundant in the atmosphere, it comes mostly from the land and ocean. C. Phosphorus is abundant throughout the biosphere, and carbon is not. D. Unlike phosphorus, carbon can only be used once, and then the cycle stops Weegy: Phosphorus is not abundant in the atmosphere, it comes mostly from the land and ocean makes the ... (More)

Weegy: All of the following are types of symbiotic relationships except for competitive exclusion. User: As a group, living things must be able to do all of the following except A. remain without change over time. B. respond to their environment. C. obtain and use energy. D. grow and develop. Weegy: As a group, living things must be able to do all of the following except remain without change over time. User: Unlike food webs, food chains A. contain autotrophs that make their own food. B. involve a network of complex interactions among various organisms in an ecosystem. C. involve a single chain of energy transfer from one organism to another through consumption. D. contain consumers that eat producers. Weegy: Unlike food webs, food chains: involve a single chain of energy transfer from one organism to another through consumption. User: Which of the following is not a result of air pollution? A. Soil erosion B. Smog C. Breathing problems D. Global warming Weegy: Soil erosion is not a result of air pollution. User: Which of the following accurately describes the pH scale? A. The lower the pH is, the more basic the solution is. B. The greater the concentration of hydroxide ions, the higher the acidity is. C. The greater the pH is, the lower the acidity is. D. The lower the concentration of hydrogen ions, the higher the acidit Weegy: The greater the pH is, the lower the acidity is accurately describes the pH scale. (More)

Weegy: Within a single use of the scientific method, the following steps can only be performed after data is collected: Conclusions are drawn. (More)

Weegy: The greater the pH is, the lower the acidity is of the following accurately describes the pH scale. (More)