1.observation is made using one or more of the five senses. 2. An independent variable is a variable that's
changed in an experiment.
3. An explanation based on an observation is alan
4. There may be only one variable in an experiment.
5.observation is made using tools or measurement.
6. What's the difference between an observation and inference?

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

Consider this plant cell which organelle is labeled g

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics