Answer:
The change in size of a gummy bear when placed in water is due to the presence of gelatin in the gummy bears.
Explanation:
Most of the gummy candies, like the gummy bears are made up of gelatin. To make the gummy bears, water and gelatin are mixed and heated. Then, this mixture is allowed to cool. During cooling, the water evaporates leaving the gelatin in a chewy form.
When the gummy bear is placed in water, the water is absorbed by the gummy bear due to osmosis. Hence, the gummy bears tend to increase in size.
Water is a hygroscopic substance i.e it tends to absorb water. So, this property of gelatin will enable it to absorb water and increase in size.
Answer:
B. Type of fertilizer
Explanation:
The independant variable would be the type of plant fertilizer. A helpful saying to remember how independendant and dependent variables is as follows:
"Independant variables predict what will cause change in the dependant variable. The dependant variable is DEPENDANT on the independant variable."
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Answer:
C: new, higher-yield crops
Explanation:
All of the other answers are problems while C is a positive scenario.
Answer:
1. 5'-TAAGGC-3'
Explanation:
According to the options the answer is 5'-TAAGGC-3'.
But note that the DNA template is read in 3' to 5' and the new complementary strand is formed in 5' to 3' direction.
Physical - Sodium is solid at room temperature
Chemical - sodium is hydroscopic in nature
