Astudent wants to compare the amounts of co2 given off by yeast provided with different amounts of sugar the student places a ballon over each container to catch the released co2 which observersations is a qualitative observation the student can make

The correct answer will be-observing the circumference of balloon.

Explanation:

The research performed to prove any hypothesis is of two types- qualitative analysis and quantitative analysis based on which the results could be qualitative as well as quantitative.  

The qualitative data provides the information about the phenomenon which can be just observed and not measured while the quantitative data gives information about the quantity by providing a value.

In the given case, the students want to measure the amount of CO₂ by collecting the gas in the balloon. The qualitative aspect of this experiment can be measured by observing the circumference of the balloon as more amount of CO₂ produced more amount of gas trapped in balloon. This changes the circumference of the balloon.

Hence, observing the circumference of the balloon is the correct answer

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave