Biology, 17.07.2019 06:28 johnsonkia873
Abiology class is conducting an experiment to determine how soil ph may affect the germination of pine seedlings. three pine seeds are placed in a pot of soil with a ph of 6.5, and three pine seeds are placed in a pot of soil with a ph of 4.0. after one week, the students count the number of seeds which have germinated and determine the mass of each pine sprout. which of these is the best way to improve the accuracy and validity of the data in this experiment? a) repeat the experiment with other types of seeds b) repeat the experiment using soils of different ph c) increase the sample size by using additional pots and seeds d) increase the number of independent variables in the experiment
Answers: 2
Biology, 21.06.2019 16:00, stephanielynch
In a relatively small iguana population the allelic frequency is tracked for three generations. webbing is a recessive allele; no webbing is the dominant allele. during one very rainy spring and summer, a flood washes all the iguana without webbed feet out to sea. by the fall, and three generations later, you have the gene pool seen here.
Answers: 3
Biology, 21.06.2019 23:00, khanhlan7213
Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy
Answers: 3
Biology, 22.06.2019 01:20, kylemartinez13
Which of the following is not considered an appendage of the skin? nails glands follicles none of the above
Answers: 2
Biology, 22.06.2019 01:30, Clayton2847
How does friction with the atmosphere affect the speed of an artificial satellite
Answers: 3
Abiology class is conducting an experiment to determine how soil ph may affect the germination of pi...
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