Adescription of the leaf disk photosynthesis lab?

In the leaf Disk Photosynthesis lab the leaf disk floats normal but when the air spaces are infiltrated with the Sodium bicarbonate, the results of the density of the leaf disk will go up, which causes the disk to sink.

digestion

it excretes wastes

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: