Freshwater ecosystems, constituting a mere 1.8 percent of Earth's surface, are characterized by their biodiversity and the crucial ecosystem services they offer, including provision of drinking water, sanitation, and industrial uses. They house different zones due to varying abiotic factors like temperature and light penetration, with each zone inhabited by species adapted to these conditions. They are intrinsic to the well-being of terrestrial biomes, linked through various abiotic and biotic factors.
Freshwater ecosystems are of immense importance due to their rarity, diversity, and functionality. They encompass only 1.8 percent of the Earth's surface, including lakes, rivers, streams, and springs. These ecosystems are incredibly biodiverse, supporting a wide variety of species such as fish, amphibians, reptiles, insects, phytoplankton, fungi, and bacteria.
Humans are heavily reliant on these freshwater biomes as they provide indispensable ecosystem services. They supply fresh drinking water, assist in crop irrigation, provide sanitation facilities, recreation spaces, and serve various industrial purposes. Conservation of these freshwater ecosystems is crucial for the preservation of terrestrial biomes, as they are interlinked through abiotic and biotic factors.
Temperature, light penetration, and water movements are key abiotic factors influencing these ecosystems. The structural compositions of aquatic systems are largely shaped by density and temperature. Such factors delineate different zones within these systems, each housing organisms adapted to specific conditions.
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Answer: The correct answer for the blank is-
Pulmonary artery.
Right ventricles receive deoxygented blood ( from right atrium) when tricuspid valves ( present between right atrium and right ventricle) open.
When ventricles contract, this blood flows from right ventricles to pulmonary artery, which takes it to the lungs.
In other words, the deoxygenated blood ( carbon dioxide containing blood) is sent to lungs via pulmonary artery so that it is exchanged with the oxygenated blood at lungs, which is then sent to the heart for its circulation in the entire body.
Answer:
A
Explanation:
For B denying that a feeling exists is trying to avoid a problem, therefore it is a defense mechanism against emotions
For C this is also a defense mechanism because you are making excuses instead of facing your bad behavior up from
And for D you are not accepting the negative feelings and trying to overpower them
Therefore, the correct answer is A
Answer: Nervous system
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The brain sends appropriate responses to muscles and glands through the nervous system.
When the brain responds to messages by sending appropriate responses to muscles and glands, it does so through the nervous system.
The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body. The brain plays a vital role in processing these signals and sending out appropriate responses.
For example, when you touch a hot stove, sensory receptors in your skin send a message to your brain, which then signals your muscles to quickly retract your hand. This quick and automatic response is coordinated by the nervous system.
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Otrophic level
food chain
food pyramid
energy path
Answer:
i believe it is energy path
Explanation:
B. gravitropism.
C. thigmotropism.
D. phototropism.
the answer is A. Photoperiodism
Hope this helps!