PLS HELP The presence of air is believed to be important for root growth in bean
plants. The apparatus available to conduct an investigation is shown
below. There are enough bottles and other materials to have multiple
setups. Additional air can be bubbled into the bottle through the rubber
tube..
State the purpose (or question) the
experimental setup is designed to test and write a possible hypothesis. *

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a).it must be applicable to future events and occurrences. b)it must be based on scientific observations that can be repeated in a controlled setting. c)it must be open to modification if new evidence doesn't completely support it. d)it must be consistent with only a small portion of relevant observations or data.