Review the graph that represents the whole class data. compare the food energy food in the saltine and pretzel with that of the pecan. elaborate on a reason for this difference. all but one answer could apply a. the pecan contains molecules with more complex chemical bonds than does the saltine and pretzel b. the saltine and pretzel contain carbohydrates; the pecan contains lipids, proteins and carbohydrates c. the data and proteins in the pecan provide more chemical energy because there are more chemical bonds to break during digestion d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats

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

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Draw the structure of dna nucleotide with adenine as nitrogenous base