Answer:
The correct answer is option B.) "the activation energy".
Explanation:
In chemistry, a catalyst is defined as a substance that accelerates a chemical reaction without being consumed in the reaction. Catalysts affect the activation of energy of the reaction by lowering it. This happens because catalysts open new pathways of reaction that require less energy, therefore the alternative routes need lowered activation energy for the reaction to start.
Answer:
True
Explanation:
Isotopes of uranium, specifically uranium-235 and uranium-238, are commonly used as nuclear fuel in power plants. When these isotopes undergo nuclear reactions, they release large amounts of energy, which can be used to generate electricity.
Answer: Any particular element can always be identified by its number of protons. Correct answer on odyseyware
Explanation:
a. innate
b. learned
Answer:
A; Innate
Explanation:
the chick had no one to show it how to breck the egg
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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Calcium is a common element found in bones in the human body
Which is a common element in the human body that is located mostly in bones?
The correct answer to this question is: Calcium