Johannes wants to know whether soil, water, or both are needed for plant growth. he chooses to conduct experiments on a willow tree for five years to answer his question. how can his experimental methods be changed to improve his experiment?
a) he needs to ask scientists what they think.
b) he needs to conduct the experiment for a longer period.
c) he needs to use a larger sample size.
d) he needs to test more factors in the environment.
Answers: 2
Biology, 21.06.2019 23:50
Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?
Answers: 2
Biology, 22.06.2019 00:00
The first three phases of the cell cycle are collectively known as (1 point) play audio cellular respiration. telophase. mitosis. interphase.
Answers: 2
Johannes wants to know whether soil, water, or both are needed for plant growth. he chooses to condu...
History, 22.07.2019 14:30
Mathematics, 22.07.2019 14:30
Computers and Technology, 22.07.2019 14:30
History, 22.07.2019 14:30
History, 22.07.2019 14:30
Mathematics, 22.07.2019 14:30
History, 22.07.2019 14:30
Spanish, 22.07.2019 14:30