Which are potential sources of error in the experiment? Check all that apply. estimating temperature to the nearest tenth of a degree
estimating the mass of the sample to the nearest tenth of a gram
estimating the thickness of the foam cups
the position of the cups of sand and water under the heat lamp
the brand of light bulb used for the heat lamp the air temperature outside the lab

The potential sources of error in an experiment are ; ( A , B and D )

When the temperature used in an experiment is rounded off to the nearest tenth in the middle of a calculation the likelihood of a potential error occuring at the final result of the experiment will be high.

An Error in an experiment is the amount of deviation from the Ideal value recorded in an experiment and some sources of experimental errors include ; estimation of values , instruments been used and error due to human activity.

Hence we can conclude that the potential sources of error in an experiment are ; A, B and D.

Learn more : link

An error is defined as a measure of the estimated difference between the observed or calculated value of a quantity and its true value.

The reason for the error is as follows:-

According to the question, these are the following option which are sources of errors.

At the time of the experiment, the exact figure of the temperature is required.

An Error in an experiment is the amount of deviation from the Ideal value recorded in an experiment and some sources of experimental errors include; estimation of values, instruments being used, and errors due to human activity.

Hence, the correct option is A, B, and D

For more information, refer to the link:-

link

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.