you must design a valid experiment to show that there are microorganisms in the air. what would be your dependent variable?
sterilized broth
growth of organisms in the broth
exposure to microorganisms in the air
you must design a valid experiment to show that there are microorganisms in the air. what would be your control group?
open flask with unsterilized broth
open flask with sterilized broth
sealed flask with unsterilized broth
sealed flask with sterilized broth
Answers: 3
Biology, 22.06.2019 00:50
Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems
Answers: 3
Biology, 22.06.2019 02:30
Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)
Answers: 2
Biology, 22.06.2019 09:00
Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia
Answers: 1
Biology, 22.06.2019 13:00
Blank is a rock with a find dark texture that makes up the oceanic crust
Answers: 1
you must design a valid experiment to show that there are microorganisms in the air. what would be y...
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