Answer:
Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.
Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.
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The final state is a gas, because the substance can fill the container.
The atoms in a gas have the most noteworthy vitality of the three states and the particles are sufficiently far from one another to allow that they move uninhibitedly and fill the compartment.
The initial state is solid, because the particles cannot slide past one another.
The particles in a strong are firmly pressed and can vibrate however not translate, while in fluid express the particles are close but can move all the more openly and can slide past each other.
So, the change described is from solid to gas.
Their main difference is how they form the daughter cells during cytokinesis. During that stage, animal cells form furrow or cleavage that gives way to formation of daughter cells. Due to the existence of the rigid cell wall, plant cells don't form furrows.
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Answer:
More light allows underwater plants to grow.
Explanation:
Ecosystem consist of biotic and abiotic elements. Biotic refers to all living organisms while abiotic refers to non living elements of the environment. In the above example, light is abiotic factor while plants that are present inside water is biotic element of an ecosystem. Biotic elements always depend on the abiotic factors for survival and development.
