Biology, 20.09.2019 01:40 DesperatforanA
Which organelle is responsible for digesting and breaking down materials within the cell
Answers: 1
Biology, 21.06.2019 16:00
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
Answers: 2
Biology, 21.06.2019 17:30
In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a.the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases
Answers: 1
Biology, 22.06.2019 07:00
Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities
Answers: 1
Which organelle is responsible for digesting and breaking down materials within the cell...
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