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Citrus2011 [14]
2 years ago
13

The first step in treating drinking water, called ____________________, involves passing water through a series of screens.

Biology
1 answer:
AlekseyPX2 years ago
6 0

The right answer is Filtration.

A water filter is composed of a filtration system that aims to separate the water from the solid particles (residues) by passing it through a porous medium, which allows only the liquids and the finer solid particles to pass through. as the filter holes (porosity). The water that comes out of this filtration system is rid of solid particles larger than the pores of the filter.

Some water filters are designed to make drinking water (very fine filtration, less than the size of a microbe).

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How do specialized organelles that capture energy from the sun help plants survive?
Softa [21]
Chloroplastst capture energy from the sun to help survive by collecting the energy to be used to convert into glucose, which is food for the plant. The process in chich this sunlight is turned into glucose is called “photosynthesis”.

I hope this helps! <3
4 0
3 years ago
The formula CaCl, represents the compound
elena55 [62]

Answer:

It represents the compound calcium chloride

Explanation:

8 0
2 years ago
Read 2 more answers
What are chemical properties
Alekssandra [29.7K]

Answer:

C. Properties that can change the chemical nature of matter.

Explanation:

Chemical properties is a characteristic of a chemical substance observed when it undergoes a chemical reaction on seeing its precipitation. On knowing the chemical properties of a substance it aids in separation, purification and classification of a compound. some examples of chemical properties are as follows:

1. Toxicity

2. Inflammability

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7 0
3 years ago
Tom and Jerry start at the same location. Tom is travelling due east at a velocity of 5 m/hr. Jerry is travelling due northwest
Sedaia [141]

Answer:

The distance between them is changing at the speed of 10.16 m/hr

Explanation:

Consider the sketch attached below.

The question is simply asking to calculate the resultant of the two velocities.

To get the angle between them, we simply use the coordinates of the two vectors to determine the angle between them.  

90 + 45 = 135°

from the cosine rule we have

c^{2} = a^{2} + b^{2} - 2abcosθ

c^{2} = 6^{2} +5^{2} - 2 ×6×5×cos 135

c^{2} = 103.426

c = \sqrt{103.426}

c = 10.17 m/hr

6 0
3 years ago
How can a calendar year help us to understand the magnitude of geologic time
Marina86 [1]

Answer:

The civil year allows us to have an idea of how long our planet has existed.

Explanation:

Calendar year is the 12-month period that corresponds to 365 days of the year, counting from 1 January to 31 December. Geological time, in turn, refers to the didactic organization of the evolution of planet Earth and the forms of life that inhabit or inhabited it. It is an instrument used by Earth's geologists and scientists to analyze and chronologically categorize (through the concept of a civil year) the natural evolution of the world in which we live, in order to better understand its past.

The civil year allows geological time to expose the number of years and days that planet Earth (and its forms of life) are in existence.

7 0
3 years ago
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