Marge Simpson decided to start a new garden in her backyard. She heard that plants compete for space and decided to testis idea. She bought a mixture of flower seeds and some potting soll She put the same amount of soil into each of 5 plastic cups. In the
first cup she planted 2 seeds, in the second cup she planted 4 seeds, in the third 8 seeds, and in the fourth cup ste planted 16
seeds. In the last cup she planted 32 seeds. After 25 days, she determined which set of plants looked the healthiest
What is the control group?

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

Which represents a negative impact of technology