Biology, 29.08.2019 16:10 mahmudabiazp3ekot
Astudent wants to answer the question "does adding calcium powder to soil make pea plants grow faster? " she adds calcium powder to the soil of 12 plants and does not add it to the soil of a second group of 12 plants. she measures the growth of all of the plants in each group for a month. which statement best summarizes the factors that need to be controlled in this experiment?
a) all plants should be the same age and health and be given equal amounts of water and sunlight.
b) all plants should be placed in separate, equal-sized pots on the same table, where they receive the same amount of sunlight.
c) all plants should be watered in the morning at the same time each day, and given the same amount of soil and sunlight.
d) all plants should be the same health and be given equal amounts of water, calcium, and sunlight.
Answers: 1
Biology, 21.06.2019 20:30
Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time
Answers: 1
Biology, 21.06.2019 22:30
Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19
Answers: 1
Biology, 22.06.2019 00:00
Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.
Answers: 1
Astudent wants to answer the question "does adding calcium powder to soil make pea plants grow faste...
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