which theory states that all of the life on the planet is decended from an orginal life form that lived 3.5 billion years ago

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Answer 1

Answer:

Answer:

universal common ancestor

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How do its eight arms help an octopus obtain food

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The more arms it has the less of a chance the prey has to swim away.

What was the experiment carried out by Hershel & Ritter.

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Hershel discovered something called Infrared light. It was basically an experiment outdoors and you have a light and when the light hits another surface (like a deck) then that surface heats up

Gravity affects all mass, how?

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Answer:

Everything that has mass has gravity. The greater the amount of mass, the greater the gravity. And the closer objects are to each other, the stronger their gravitational pull is. The reason we have weight is because of the gravitational pull on our bodies (our mass) by the Earth.

Explanation:

Answer:

Explanation:

The number of energy levels filled in an atom is determined by the number of

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Answer:

The number of energy levels filled in an atom is determined by the number of orbitals.

Explanation:

The highest numbers of the electrons in a given energy level relies on the presence of number of orbitals. In one orbital it contains two electrons. Electron that are present in the outer energy level of atom are known as the valence electrons. Which remains as the determining factor of the reactivity of the element. Lights are being emitted when an electron comes from higher state to the lower state.

What is two types of organelles

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Two types of orgonells Nucleolus and ribosomes

Two types of organelles are mitochondria and Golgi apparatus.

While performing an experiment involving a reaction between two chemicals, the scientist observes that the reaction container has become warm. The observation is an example of:

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Explanation:

In an exothermic reaction, heat is released into the surroundings. In this type of reaction, energy of products is less than the energy of reactants.

In an endothermic reaction, heat is absorbed by the reactant molecules. In this type of reaction, energy of products is more than the energy of reactants.

Therefore, we can conclude that while performing an experiment involving a reaction between two chemicals, the scientist observes that the reaction container has become warm. The observation is an example of exothermic reaction.

When an object is becomes warm its an example of exothermic reaction.

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