Stars seem to disappear from the city skyline at night due to light pollution caused by artificial lights.
It is the excessive or less use of artificial light that disrupts the natural patterns of wildlife, disrupts human sleep, and conceals the stars in the sky.
It is because in the city skyline there is excessive use of artificial lights and there is not a portion left which is not encroached by artificial lights.
Hence, option d) light pollution is the correct answer.
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Answer:
C
Explanation:
The organ that secretes triiodothyronine is:
C) Thyroid gland
Answer:
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Explanation:
Answer:
Gaseous exchange, or respiration, is the process in which terrestrial plants take in oxygen from the air and release carbon dioxide. It involves a series of biochemical processes that take place within specialized cells embedded within the plant's leaves.
The first step of gaseous exchange in terrestrial plants is diffusion, where molecules move from an area of high concentration to an area of lower concentration. In this case, atmospheric oxygen diffuses into leaf cells through small openings on their surface called stomata. As these molecules enter the leaf cells, they are taken up by specialized photosynthetic organelles known as chloroplasts.
Chloroplasts then absorb energy from sunlight and use it to combine CO2 with water (H2O) to produce sugars and other organic compounds such as amino acids and lipids (photosynthesis). The resulting reaction produces chemical energy stored in the form of ATP (Adenosine Triphosphate). This ATP drives various metabolic pathways that use oxygen as well as glucose for cellular respiration. During this process, some oxygen enters the cell while some carbon dioxide is released back out into the atmosphere through small openings on their surface called stoma – completing the cycle of gas exchange between terrestrial plants and their environment.
Explanation:
Answer:d)introns; exons
Explanation:Introns are the non-coding portion of the DNA. They do not code for a gene that can be expressed hence the need for them to be removed from the coding genes(Exons). The exons are then joined together after the introns have been removed to create a sequence of amino acids.
b. plants
c. rivers
d. soil bacteria
Answer:
The correct answer is option c: rivers
Explanation:
Hello!
let's solve this!
In an ecosystem, the biotic factors are those that have life, that is, living beings.
Instead, abiotic factors are those that have no life.
Let's analyze each of the options:
to. herbivore population: they are living beings so they are biotic factors
b. plants: they are living beings, then biotic factors
c. rivers: they are not living beings, they are abiotic factors
d. soil bacteria: they are living beings so they are biotic factors.
We conclude that the correct answer is option c: rivers