A seals flippers has finger bones when a birds wing is just a bone connected to other joints.
Answer:
C. Independent variable
Explanation:
The independent variable in an experiment is the variable that the experimenter manipulates or changes in order to effect a measurable response in the dependent variable.
According to this question, an experiment is conducted to determine what concentration of disinfectant is most effective in killing bacteria. The independent variable is the CONCENTRATION OF DISINFECTANT because it is the variable being changed or manipulated.
I would say A or C . but go with C .
Isotopes of an element will contain the same number of protons and electrons but will differ in the number of neutrons they contain. In other words,isotopes have the same atomic number because they are the sameelement but have a different atomic mass because they contain a different number of neutrons.
Answer:
While looking for food and places to sleep, migrant birds might have more trouble
identifying windows and fly into them more often . However, it could also be that
there are simply more window collisions in the fall because there are more birds in
the area when migrant and resident birds co-occur in urban areas.
