b. Scientists often repeat one or more steps several times.
c. Sometimes scientists forget to perform some of the steps.
d. The steps can be performed only once but in any order.
The correct option is B.
The scientific method refers to the technique which scientists used to carry out scientific investigations about observed phenomenon. The scientific method is made up of many steps and the steps are described as non linear because, scientists sometimes have to repeat some of the steps several time in order to ensure that they are on the right track. Repetition is very important in scientific investigations; it is used to ensure that the results obtained are accurate and bias is minimized.
B. The law of conservation of energy
C. Dalton's atomic theory
D. The law of conservation of matter
-can't be scratched by a penny
-is softer than a diamond
-must be a precious metal
Well seeing as a diamond can scratch a diamond it's either A or C.
Answer:
Cells are the smallest structural and functional unit of the Human body.
When a group of specialized cells perform a single job they form a TISSUE.
When a group of tissue carry out a particular function in the body they form the ORGANS.
Now when a group of organs perform the life process in the human body it constitute an ORGAN SYSTEM.
Explanation:
Cells are the basic units of life that pool together to form tissues. Tissues are groups of similar cells that perform a common function. Various types of tissues collaborate to form organs, each with a particular role in the organism.
The relationship between cells, tissues, and organs stems from the hierarchical organization of the body, in which increasing complexity levels lead to multicellular organisms.
Cells are the basic units of life, capable of performing all vital functions. They can divide to create new cells and group together performing similar functions to form tissues.
Tissues are groups of cells performing a common function. Organs, however, are complex structures consisting of different types of tissues operating in concert to fulfill a specific job in the organism, like the heart pumping blood or lungs ensuring oxygen supply.
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This was to gain more support for Allied efforts in the Second World War to ensure their victory. By utilizing media, propaganda to support the war went into full swing as companies lent their efforts to achieve that end. They convinced people to buy war bonds as well as boost morale for the troops.