The Answer Is C. Organelles
How many drops of caffeine she drops on the worm is the manipulated variable.
In an experiment, the independent variable is a manipulated variable. Due to the fact that you may alter it, it is termed the "manipulated" one. In other words, you can choose in advance whether to raise it or lower it. Only one variable should be changed at a time throughout an experiment.
The Independent variable is Caffeine's impact. the production and use of nitrogen fertilizers, as well as the burning of fossil fuels in autos, power plants, and industries, are dependent variables that are local in scope. the heart rate of the worm is the responding variable in this experiment.
When an earthworm is given a stimulant like caffeine, its heart rate rises. Does coffee make an earthworm's heart beat faster? is the research topic upon which the experiment is based. The effect of coffee is the independent variable in this research question, and the response it causes is a change in heart rate (the dependent variable) This brings us to the following theory: "If an earthworm is given a stimulant like caffeine, then its heart rate accelerates."
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Answer:
1. C
2. A
3. B
4. D
5. B
Explanation:
A. Colorful
C. Expensive
B. Appropriate for the project
D. Trending
2. This cloth is smooth, durable, and absorbent.
A. cotton
B. linen
C. silk
D. wool
3. This is an expensive fabric. It is quite difficut to cut, and sew because of its
fine and lustrous texture.
A. linen
B. silk
C. syntethic D. rami
4. Before the fabrics are cut, the first thing that you should do is:
A. pressing
B. folding
C. soaking D. stretching
5. After stretching the cloth on all sides, until the horizontal an vertical threads
are inline with each other, what is the next step?
A. stretching B. folding
C. soaking
D. pressing
The given blank can be filled with two electrons.
The K, L, M, N are the four shells in an atom. The K shell is the initial that is present nearest to the nucleus of the atom, and it comprises two electrons. The L shell can withstand eight electrons, M shell can withstand eighteen electrons, and however, the atom attains stability if the last (valence) shell comprises eight electrons.
Answer:Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms.
Explanation:
