When air is heated up the molecules spread out and move faster, so heat rises because it is less dense than the cooler air around it.
Answer:
In a research there are two variables independent and dependent variable. independent variable is defined as the variable which is controlled and changed in a scientific experiment and evaluate the effects on the dependent variable while the variable which are tested and measured in experiment are called dependent variable.
When antibiotic is sprayed at one side of the petri dish, the bacterial growth on that side will eventually decrease in comparison to other side.
So, the independent variable in this experiment will be antibiotic because it is used to understand the growth of bacteria by decreasing their numbers and the dependent variable in this experiment will be bacteria as they vary according to the change in independent variable that is antibiotic.
I don't know how to answer the true or false however it can take around 4 weeks in the peak of the summer climate.
Answer:
mutation
Explanation:
A mutation is a change that occurs in copying a DNA sequence where the order of the proteins could be altered.
Answer:
amino acid tryptophan
Explanation:
Eating Turkey Won't Make You Sleepy. The oft-repeated turkey myth stems from the fact that turkey contains the amino acid tryptophan, which forms the basis of brain chemicals that make people tired.
