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3 years ago

Earth has several ideal features which enable it to support life. Most important is the.

1 answer:

4 0

The elements that make up the earth are the main reason for life on earth. The elements include water as a component of life support; an atmosphere with a composition suitable for life; and the distance between the sun and the earth is neither too close nor too far away and also on earth has oxygen and gravity.

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A farmer has begun using new chemical to help increase the productivity of her tomato plants. The farmer applied increasing conc

kirill115 [55]

Answer:

Independent variable: the concentrations of the chemical product used.

Dependent variable: the productivity rate of tomato plants.

Control variable: irrigation, intensity of sunlight, number of seeds, tomato plants, number of tomato plants, tomato species.

Explanation:

The independent variable is one that presents an element that stimulates the visualization of a result and that acts on the dependent variable influencing it to behave in a certain way that will be evaluated for the formulation of the results. In the text above, we can see that the concentrations of the chemical product have the ability to influence the productivity of the tomato, therefore, the concentrations of the product are the independent variables.

Dependent variables, on the other hand, are those that do not provide influence, but are influenced. In the text above, we can see that the productivity of the tomato is influenced by the concentrations of the chemical product, therefore, the productivity of the tomato is the dependent variable.

The control variables are all the experimental elements that remain the same, without changes throughout the experiment. In the case of the experiment quote: irrigation, intensity of sunlight, number of seeds, tomato plants, number of tomato plants, tomato species.

8 0

3 years ago

How does earth's position in relation to the sun cause these weather difference

Simora [160]

Which ever way the suns facing towards the earth is gonna be warm

4 0

3 years ago

Which of these is a centrifugal force at play in the conflict between North and South Korea?

katrin [286]

Answer:

I think it's D but could be A

5 0

3 years ago

Read 2 more answers

Label the ocean that touches the shores of both Asia and South America.

Oksanka [162]

Answer:

9th: The Pacific Ocean!

Explanation:

9th: Label the ocean that touches the shores of both Asia and South America.

7 0

3 years ago

The distance from Alexandria to Syene is about 500 miles. On the summer solstice the sun is directly overhead at noon in Syene.

svp [43]

Answer:

Earth circumference is 25000 miles

correct option is 25,000 miles

Explanation:

we have given here Alexandria to Syene distance = 500 miles

the sun is 1/50th of the circumference of the sky (about 7°)

as we know that Earth circumference done by astronomer Eratosthenes in 240 B.C

He observe on a particular time of day ( in noon) during the summer solstice

and there was no shadow in Syene in Egypt so This was verified that the sun must be directly on overhead and not at an angle to the surface of the city at that time

In Alexandria he measured the position of sun at the same time and found it to be nearly (1/50)th of a complete circle

it would be 7.2 degree (when we do $\frac{360}{50}$ = 7.2)

so 2 reference points being 2 cities for the sun

all measure circumference = the distance between these two cities × 50

and we have given 500 miles

Earth circumference = 500 × 50

Earth circumference is 25000 miles

correct option is 25,000 miles

4 0

3 years ago