Answer:
B) 15mi/h
Explanation:
In general, you can just look at a road sign and see that usually, that's how the speed limits are provided.
oxygen in the air is at a dangerous level
the amount of pollutants in the air is unhealthy
acid rain is likely to fall
Answer:
the amount of pollutants in the air is unhealthy
Explanation:
AQI or Air Quality Index assesses the air quality. It indicates how clean or unhealthy the air is and its effects. It is calculated by measuring the concentration of major air pollutants across many locations in the country. The air quality is divided into six categories:
An AQI of 201 means that the air quality is very unhealthy. Everyone is susceptible to health hazards in this air quality.
Answer: Plate C
Explanation: In the picture, we can observe that the northern hemisphere experiences winter, whereas the southern hemisphere experiences summer. It is because the tilt of the earth is facing away from the sun in the northern hemisphere and the tilt is facing towards the sun in the southern hemisphere.
In the winter experiencing northern hemisphere, the plates L, K and J are having night time. But plate B, C and D are having daytime.
Here, plate D is region experiencing both the effects of summer and winter as it is in the equatorial zone. So it will not be fully considered to be experiencing winter.
Therefore, the plate C is the region that experiences daytime during winter.
Minerals have the property of cleavage to split into different parts, particular colors to particular minerals, and magnetism due to presence of electrons. Thus, the correct option is D.
Minerals are the elements which are found in the Earth crust and in foods that our body need to undergo development and function. Some of the essential minerals for health of a living organism include calcium, phosphorus, potassium, sodium, chloride, copper, iodine, etc.
Minerals show the property of cleavage, through this large pieces of minerals breaks into smaller ones which can be further used in different processes.
Different minerals have different colors which can be changed due to environmental conditions and reactions.
Minerals show magnetism. It is property responsible for the magnetic behavior of minerals due to presence of electrons in the valence shells.
Therefore, the correct option is D.
Learn more about Minerals here:
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Answer:
The correct answer will be- If exposed to sunlight, plants grow faster than non exposed plants.
Explanation:
A scientific hypothesis is a predicted idea proposed which explains the natural event to a limited extent. A hypothesis is based on the previous research work on the same issue, therefore, it is even considered an educated guess.
A hypothesis is designed in a way that it could be tested so it should contain all the variables a well as it could explain the possibility of the scientific question.
In the given question, the person noticed that plants grew faster in sunlight so the hypothesis will be- If exposed to sunlight, plants grow faster than non exposed plants. Here the growth of the plant will be the dependent variable while sunlight will be the independent variable.
I hypothesize that the plants that are the closest to the window are growing at a faster rate due to the amount of sunlight it may have been receiving. Therefore, I predict that the more sunlight a plant receives the faster it may grow.
(I do not actually think this. I just hope this helps you)