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Flauer [41]
3 years ago
14

During the Carboniferous period, plants and animals grew very large due to high concentration of A. oxygen in the atmosphere. B.

nitrogen in the atmosphere. C. carbon dioxide in the oceans. D. argon in the oceans .
Biology
2 answers:
Alja [10]3 years ago
7 0

Answer:

Option A, oxygen in the atmosphere

Explanation:

The highest level of oxygen reached during this phase of the geological cycle of earth. The oxygen level in  Carboniferous  period accounted for 35%  as compared to 21% of oxygen in the atmosphere in present time.

Due to high oxygen content, the giant and wide varieties of terrestrial animal and plant species evolved. For example – size of insects and carwlies increased, plant became extremely giant, increase in number of tree ferns etc.

Aliun [14]3 years ago
4 0

Answer: A oxygen in the atmosphere

Explanation:

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If heat energy is transferred from direct contact between a warm object in a cold object it has been transferred by _________
Minchanka [31]

<u>Answer</u>: Conduction

<u>Explanation</u>:

  • There are basically 3 types of processes that occur for heat transfer - conduction, convection and radiation,
  • <u>Conduction</u> is the process of heat transfer in which the objects are placed in a <em>direct contact</em> and the heat travels from one object to the other due to the temperature difference between them. It is a slow process and occurs usually when the heat transfer has to to take place between solid objects.
  • <u>Convection</u> is the process of heat transfer in which energy transition takes place in the liquids and gases and the heat gets transferred due to the density difference between the fluids.
  • <u>Radiation</u> is a type of heat transfer in which the heat is transferred without any sort of physical contact using electromagnetic waves.

Since, in the given question the <em>heat is being transferred through a direct contact, it is conduction which is taking place.</em>

6 0
4 years ago
A condition in a scientific study that is manipulated so that its effects may be observed is the ______
saw5 [17]

Answer: Independent variable

 

An independent variable is a condition in a scientific study that is changed or manipulated to test the effects on the dependent variable. The experimenter controls the value of independent variable and its value represent inputs or causes like potential reason for variation.

Additionally, there are tendencies that independent variables are included in a scientific study especially if the experimenter has no intention to test their effect directly.

 

 

3 0
3 years ago
List the seven pea plant traits that Mendel observed while doing these experiments
Brut [27]

Answer:

flower color, flower position, stem length, seed shape, seed color, pod shape, and pod color.

Explanation:

flower color (purple or white), flower position (axil or terminal), stem length (long or short), seed shape (round or wrinkled), seed color (yellow or green), pod shape (inflated or constricted), and pod color (yellow or green).

hope this helps, have a good day :-)

5 0
3 years ago
Living things need energy to carry out their life processes. Animals get this energy from food through a process called cellular
Sergio [31]

Answer:

Organisms mainly use two types of molecules for chemical energy: glucose and ATP. Both molecules are used as fuels throughout the living world. Both molecules are also key players in the process of photosynthesis.

Explanation:

5 0
3 years ago
When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes A. in biomes at
frez [133]

The correct option is (A) in biomes at different latitudes.

When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.

<h3>What is biome?</h3>
  • A naturally existing species community that is influenced by a region's climate and latitude is referred to as a "biome."
  • A place where two biological communities come together and merge is known as an ecotone. It could be small or large, local (the area between a field and a forest), or regional (the transition between forest and grassland ecosystems).
  • As you ascend a mountain, different sections experience varying amounts of sunlight and warmth. People see differences in the biological community as an organism ascends a mountain because different latitudes are present.

Learn more about the biome with the help of the given link:

brainly.com/question/18601179

#SPJ4

5 0
2 years ago
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