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loris [4]
3 years ago
7

What were the most likely ancestors of land plants?

Biology
1 answer:
alexandr1967 [171]3 years ago
8 0
Ancient aqueous species because they adapted to walk and breath on land through evolution.
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6. (50 points) EXPLAIN all of the tree trimming steps in order as if you were discussing a job with a
stiks02 [169]

Step one: Travel approximately 18 inches up the underside of the branch you are removing. Cut up about halfway through the branch.

Step two: Move to the top side of the branch. Choose a location an inch further out from your first cut. Carefully cut down until the branch breaks free.

Step three: Find the branch collar on your trunk. This is stem tissue around the base of the branch. . Make a complete cut with a 45-degree angle kicking out from the base of the tree.

(SOURCE Chris Lambton) Add your vocabulary words in along the way if you decide to use my answer.

5 0
3 years ago
What evidence supports the big bang theory?
igomit [66]

Evidence supporting the Big Bang theory includes the presence of cosmic microwave background radiation, visual observation of redshifted objects and the abundance of primordial elements found throughout the universe.

8 0
3 years ago
What determines the chemical properties of minerals
Brilliant_brown [7]
What determines the chemical properties is : color, hardness, luster, crystal forms, density, and cleavage.
5 0
3 years ago
Help me pleaseeeee!!
DochEvi [55]

Answer:

POLLUTANT, SOURCE AND IMPACT

Carbon Monoxide

SOURCE:- carbon monoxide main sources are from our homes, eg; wood stoves and fire place, generators, gas stoves, kerosene heaters, leaking chimneys, tobacco smokes etc

IMPACT:- carbon monoxide can cause organ failure as it reduces the amount of oxygen the hemoglobin been carried in the red blood cells to this organs in our body.

Carbon dioxide

SOURCE:- carbon dioxide can be from both human and natural source. Example of the sources includes; natural source ( ocean release, decomposition and respiration), human activities ( burning of coal, oil and natural gas, cement production etc)

IMPACT:- carbon dioxide causes difficulties in breathing as it displaces oxygen in the air.

It also increase the greenhouse effect (global warming) as more heat energy gets trapped by the atmosphere causing the planet to become warmer.

Sulphur dioxide

SOURCE:- sulphur dioxide mainly occur due to human activities such as fossil fuel combustion at industrial facilities, in ships etc.

IMPACT:- Sulphur oxide has been linked to many health effect and diseases such as cardiovascular diseases. It also causes respiratory problems, asphlegm and asthma attacks, irritation of lungs, throat and nose as well.

Nitrogen oxides

SOURCES:- nitrogen oxides also comes from human activities such as; combustion of fossil fuel, making of nitric acid, refining metals as well as petrols, explosive, food manufacturing etc.

IMPACT:- Nitrogen oxides has also been linked to many respiratory health issues such as bronchitis and wheezing. It causes the lining of the lungs to inflame there by reduce the immunity of the lungs to respiratory diseases.

Methane

SOURCE:- methane can be from either natural or human activities. The natural source includes; food digestion by cattles, decay of organic materials. Human activities such as waste management, rice production, oil and gas production etc.

IMPACT:- Methane is considered a green house gas like carbon dioxide, it contributes to the trapping of heat energy in the atmosphere which causes global warming. It is also linked to serious health issues such cardiovascular, respiratory and neurological problems.

Particulates

SOURCE:- particulates are fine tiny particles of matter found in the air, it might be in solid or liquid form. Example; dust, smoke, fumes etc. This particles can suspended in the air for an extended periods of time.

IMPACT:- exposure to particulates can cause variety of respiratory health problems such as difficulties in breathing, coughing, lungs and heart problem etc.

7 0
3 years ago
Which of the following is a major force that moves water through the xylem tissues of a plant?
Sophie [7]
It is d: both b and c the capillary action and transpirational pull
5 0
3 years ago
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