Answer: Observe for changes
Explanation:
There are two different types of variable in an experiment. One is dependent variable and the other one is independent variable.
The independent variable are the factors which are changed in the experiment in order to observe the change and get the result of the experiment.
The changes in the independent variable changes the dependent variable and then observed change is the result.
So, the dependent variable that observes for the changes.
The dependent variable in an experiment will be the one that you _____;
D. Observe for changes
Anexperiment has three kinds of variables;
Independent
Dependent
Controlled
The independent variable is the one that the scientist changes so A is not an option.
The experimenter is to change the independent variable, thus, the change in the dependent variable is observed and recorded
a
grazing
b
logging
c
shipping
d
agriculture
Question 2
Which of the following is a natural disaster that can have a significant impact on human populations?
a
volcano
b
all of the above
c
earthquake
d
hurricane
Question 1: Shipping
Question 2: All of the Above
Which feature do prokaryotic and eukaryotic cells share?
6. Energy transfer between organisms normally involves conservation of heat energy.
C. Energy is lost between trophic levels.
Energy is lost between trophic levels.
Answer: Option C
Explanation:
The source of energy for all organisms is the Sun. The Tropic levels exhibit the flow of energy in an ecosystem. The flow of energy is always in one direction. The energy level decreases crossing each trophic level as energy is lost in the form of heat.
Primary producers are the first in Trophic level, The Herbivores fall in the next level , the Carnivores form the next level and the decomposers are the last in the trophic level. The decomposers decompose all the living organisms and convert to nutrients that are available in the soil. The plants take up this nutrient and hence this is a cycle.