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sukhopar [10]
3 years ago
12

How do scientists calculate population density ?

Biology
2 answers:
Arlecino [84]3 years ago
7 0
People/Land Area=Population Density is the correct answerer
Viefleur [7K]3 years ago
3 0
They use a formula and that formula is 
People/Land Area=Population Density
You might be interested in
BO
kozerog [31]

The correct answer is C. Controlled experiments

Explanation:

A scientific claim is a statement that describes or explains a phenomenon of the world. These statements can be proven as valid or invalid only through scientific experiments, which involve testing in controlled conditions the phenomenon. This is the only way because the scientific method should be followed. For example, if the claim is that humidity affects the growth rate of cacti. The researcher will need to use multiple cacti and use different percentages of humidity to prove if humidity increases or decreases the growth rate. Also, in this case, other factors such as nutrients in the soil, exposition to sunlight, etc. should be controlled to guarantee these factors are equal for all plants. According to this, the one that serves as evidence for the scientific claim is controlled experiments.

4 0
3 years ago
Which of the following should be given to students before they begin a laboratory experiment?
Aleks [24]
The things you need to start the experiment is what you need
3 0
3 years ago
Read 2 more answers
Franklin was performing an experiment by combining hydrochloric acid and sodium hydroxide. He measured the mass of his reactant
Naddik [55]

Answer:

B) an error occurred, the mass of the reactants should equal the mass of the products.

Explanation:

The answer choices are:

A) no error occurred, some of the products are always lost as heat.

B) an error occurred, the mass of the reactants should equal the mass of the products.

C) an error occurred, the products should weigh more than the reactants.

D) no error occurred, water is not weighed when determining the weight of the products.

Solution

The basis to answer this question is the law of conservation of mass.

Any chemical reaction satisfies the law of conservation of mass: mass cannot be either created nor destroyed, so, always, the mass of the reactants equal the mass of the products.

Thus, since he measured the mass of his reactant materials to be 35g and he reported that his products weighed 32g, his data are in clear contradiction of the law of conservation of mass. So, there is an error in his results: the mass of the reactants should equal the mass of the products.

6 0
3 years ago
Read 2 more answers
Which of the following results when a sperm cell fertilizes an egg cell?
ExtremeBDS [4]
The answer is D. Zygote. A zygote is formed by the fertilization of an egg by a sperm. A gamete is what we refer to an egg or sperm as. Fertilization is what we call when a sperm and an egg come together, but it is not the product of the two.
5 0
2 years ago
HELP
katovenus [111]
The answer is Disaccharide
6 0
3 years ago
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