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alekssr [168]
2 years ago
6

Over the last several decades, what have researchers discovered about atmospheric CO2 levels?1 They have decreased.2 They have i

ncreased.3 They have remained the same.4 They increased for a period, but have now stabilized.
Biology
1 answer:
Anna11 [10]2 years ago
4 0

Answer:

they have increased

Explanation:

What happens with pollution is that every day are tons of CO2 liberated to the atmosphere. those tons of pollution supose to be regulated by the states, but that is not what actually happens in third world countries there is an almost uncontrolable increase of CO2 liberation at the atmosphere. In the first world countries it's more controlled but still haven't decreased the CO2 levels released into the atmosphere.

The CNN (an spanish daily paper) said: the CO2 levels are the highest in the last 3 million years, in a new released the past april.

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What is one difference between a cell wall and cell membrane
icang [17]

The correct answer is:

a cell wall is only included on the plant cell

the cell membrane is included in both plant and animal cells

Explanation:

The cell wall is the outer most integument of the cell. The cell wall covers the cell membrane. The cell membrane is also known as the plasma membrane or plasmalemma. There is no another name for the cell wall. The cell membrane is being in almost all types of cells.

The purpose of the cell membrane is the equivalent as that of the skin. It leaves the elements inside the cell from the outside. The cell membrane provides assistance to the cytoskeleton of the cell, gives shape to the cell, and helps in the formation of tissues by adding the matrix located in the extracellular. It allows the passage of a certain substance.A cell membrane is incorporated by the cell wall which forms the outer most integument.

3 0
3 years ago
Read 2 more answers
A __________ is a trait that helps an organism survive and reproduce
Iteru [2.4K]
A adaptation is a trait that helps an organism survive and reproduce.
3 0
3 years ago
The gravity of the Sun and Moon pulls earth's surface in opposite directions:​
sweet [91]

Answer:

The Moon's gravity pulls more on the planet than the water on the opposite side. These two water bulges on opposite sides of the Earth aligned with the Moon are the high tides. Spring tides occur when the Earth, the Sun, and the Moon are aligned, increasing the gravitational pull on the oceans.

8 0
2 years ago
Describe the relationship between the wavelength and frequency of electromagnetic waves
larisa [96]

Answer:

Frequency is inversely proportional to wavelength.

Explanation:

frequency is the number of oscillations in a unit of time.

Wavelength is the length between one oscillation and the next oscillation.

take two springs and 4 pins. (springs should have loops or hooks at terminals to attach to pins.)

Now get two pins and pin them at a certain distance apart.

take the first spring and attach its two terminals to the pins.

Repeat the above procedure, but double (increase the distance x2) the distance between two pins.

Now you have to measure how many coils are there within 5cm of the two springs.

you'll observe that the second spring has half the coils of the first spring within 5cm.

In here no. of coils is the frequency

5cm length is time.

distance between coil is the wavelength.

7 0
2 years ago
The function of a plant's vascular system is to
Arturiano [62]

Answer:

Deliver water, nutrients, amino acids, etc to the rest of the plant, and afir machanical supoort

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3 years ago
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