OPEN BOOK TEST- NAME THE FOLLOWING:
1. An organism which acts as the carrier of dengue virus
2. A microbe that does not have a cellular structure
3. Plant like organism with photosynthetic pigment
4. Any one disease in human beings caused by virus
5. Instrument through which a microbe can be observed properly​

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

Match each term to its best definition? sedimentary depositional enviornment

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction