Answer:
Burning fossil fuels is different from other processes that cycle carbon in environments on Earth in the following ways:
Speed: Burning fossil fuels releases carbon dioxide into the atmosphere much more quickly than other natural processes. For example, it takes millions of years for carbon dioxide to be released from rocks and sediments through natural processes, but fossil fuels can be burned in a matter of seconds.
Scale: The amount of carbon dioxide released into the atmosphere from burning fossil fuels is much greater than the amount released from other natural processes. In 2019, humans emitted about 38 billion tons of carbon dioxide into the atmosphere, of which about 89% came from burning fossil fuels.
Location: Burning fossil fuels releases carbon dioxide into the atmosphere in specific locations, such as cities and power plants. This can lead to high concentrations of carbon dioxide in certain areas, which can have negative impacts on human health and the environment.
Other processes that cycle carbon in environments on Earth include:
Photosynthesis: Plants use carbon dioxide from the atmosphere to produce food.
Respiration: Plants and animals release carbon dioxide into the atmosphere when they breathe.
Decomposition: When plants and animals die, their bodies are decomposed by bacteria and fungi, which release carbon dioxide into the atmosphere.
Weathering: Rocks and sediments are weathered over time, releasing carbon dioxide into the atmosphere.
Volcanic eruptions: Volcanic eruptions can release large amounts of carbon dioxide into the atmosphere.
These natural processes cycle carbon between the atmosphere, land, and oceans. The carbon cycle is a natural process that has been happening for millions of years. However, human activities, such as burning fossil fuels, are disrupting the carbon cycle and causing carbon dioxide levels in the atmosphere to rise. This is leading to climate change, which is having negative impacts on the planet and its inhabitants.
To reduce the impact of burning fossil fuels on the carbon cycle, we can transition to renewable energy sources, such as solar and wind power. We can also improve energy efficiency and reduce our reliance on fossil fuels.
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b_All the atoms lie in a line.
c_The bonds orient in a tetrahedral fashion.
d_All the atoms lie in a plane.
e_The groups rotate around the C=C bond.
Two C atoms form a double bond. Each C is bound to two H atoms. All the atoms lie in a plane. Thus option D is true.
The atom is the basic unit of a matter, it consist of three sub atomic components such as proton, neutron and electron, where proton and neutron present at the central nucleus of atom and electron surround the nucleus.
Proton is positively charged, neutron is neutral and electron is negatively charged; the total number of protons in an atom called as proton number or atomic number which is denoted by the capital letter Z
This number is always a whole numbers range from 1 to 118 according to periodic table element and in an electrically neutral atom the number of electrons is equal to the atomic number.
Thus option D is true.
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Answer:
All the atoms lie in a plane
- the double bond limits all the atoms to a plane
Explanation:
Answer: The main steps of digestion in human are ingestion, digestion, absorption, assimilation and excretion
Explanation:
Ingestion is the process where food is taken into the body through the mouth.
Digestion is the process by which the food is broken down into nutrients and waste. This take place in the stomach and small intestine.
Absorption is the process where the separated nutrients is absorbed in the blood.
Assimilation is the process where the absorbed nutrients is utilized by the body tissues and cells
Excretion is the process where the undigested waste is expelled out from the body through the anus.
Answer:
Through these studies of evocation of memory it is expected that the healthy patients activate the hippocampus zone in both hemispheres. The hippocampus is a region of the brain located below the cortex, which plays important roles in memory.
Secondary Succession
Pollution
The process that the given scenario best represents is secondarysuccession, i.e., option B.
When a climaxcommunity or intermediate community is impacted by a disturbance is referred to as secondary succession.
This process restarts the cycle of succession generally not back to the beginning as soil and nutrients will be still present.
In the given scenario, it is showing a secondarysuccession.
Thus, the correct option is B.
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B)Seeds are protected and nourished by a fruit
C)The zygote is the first cell of the gametophyte phase
D) Fertilization produces a diploid cell.
Fertilization produces a diploid cell is the common phase that occurs in the life cycle of both the moss and fern. Hence, the correct option is D.
Fertilization refers to the fusion of haploid gametes of the male and female to produce a diploid cell, which is called zygote.
Mosses belong to bryophytes and ferns belong to class pteridophytes. Both undergo sexual and asexual reproduction. They undergo asexual reproduction by the production of spores, while sexual reproduction with the formation of gametes.
Both undergo oogamous mode of sexual reproduction with the formation of zygote that is diploid in nature. It is facilitated by the fusion of non-motile female gamete with the motile male gamete, which is termed as sperm.
Therefore, the correct option is D.
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Answer;
D) Fertilization produces a diploid cell.
Explanation;
In mosses; A single spore germinates to form a branched, filamentous protonema, from which a leafy gametophyte develops. The gametophyte bears organs for sexual reproduction. Sperm, which are released by the mature antheridium (the male reproductive organ), are attracted into the neck of an archegonium (the female reproductive organ). Here, one sperm fuses with the egg (fertilization) to produce the diploid zygote.
The life cycle of a fern is very different from the life cycle of many other plants. Ferns have an intermediate stage, called a gametophyte, which then grows into a mature fern. During Gametophyte stge, the spores are produced on the underside of mature plants. These will germinate and grow into small, heart-shaped plants called gametophytes. The gametophytes produce both sperm and egg cells, and will fertilize itself, or others to yield a diploid cell.