Answer:
<em>B. All living organisms are composed of one or more cells, which came from pre-existing cells.
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Explanation:
Scientific theory is given as an answer to a natural happening in the earth but scientific laws are detailed idea of how nature will act under certain conditions.
Theories are given after an experiment has been performed under controlled conditions. Scientific theory cannot be changed to scientific laws and scientific laws cannot be changed to scientific theory.
Scientific theories are broader in scope, and give overall clarifications of how nature functions and why it shows certain attributes. Similarly, all cells comes from pre-existing cells is an example of cell theory.
Answer:
False.
Explanation:
I am almost entirely sure that DNA testing had not been discovered at this time, but regardless of whether that is true, the very first criminal case that DNA testing was used in occurred in 1985. So no, it was not used commonly in the 20's.
Answer:
Water pollution may be defined as the contamination of the unwanted substance or pollutant with water that changes the normal characteristics of water. Three main contributors of ground water are as follows:
Chemical farming: The use of pesticides and fertilizers in the fields and its direct run off in river and groundwater causes the water pollution.
Industrial waste: The industrial waste consists of harmful chemicals and heavy metals. The direct discharge of chemical waste in the lakes, ground water and ponds makes the water dirty and causes water pollution.
Effluent from waste water treatment plant: The effluent and the harmful chemical waste release from the waste water treatment plant is the major contributor to the ground water. The effluents mix with the ground water and changes the ground water property.
Density = mass/volume
X = 10/50
X=.2
Answer:
No
Explanation:
Both A alleles and B alleles are dominant over the O alleles. This means that both parents must have an O allele present to even have a chance of having a child with type O blood. Lets say the mother has type O blood with the father having type AB blood. The possible combination would be: AO, BO, AO, BO. The punnett square should look like this:
A B
O AO BO
O AO BO
