Describe the two functions of a catalyst in terms of cause and effect

1 answer:

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Catalysts are substances that cause a chemical reaction to occur in a different way than it would otherwise happen without that catalyst – a catalyst could cause a reaction to happen at a faster rate, or at a lower temperature, than would be possible without the catalyst.

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The sharp reduction of numbers of a population and with it the gene pool through a severe epidemic is an example of :

Mademuasel [1]

Answer: The Bottleneck Effect

Explanation:

A Bottleneck effect is the sharp reduction of numbers of a population through environmental effects or human activity. It causes a loss of the genetic pool and its variety; genetic variation lowers and increases with time as random mutations occur.

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3 years ago

Please help for brainliest and 20 points.

Morgarella [4.7K]

18. Penny: Used to measure mineral toughness; Cuprum penny's toughness is 3.

Hand Lens: Could be used to measure the hardness of the mineral; the glass can be used as a scratch platform; it can also be used to test the luster of the mineral tile; the mineral is rubbed in the glass portion of the tile and a powdery strike of the stone is given to distinguish the colour of the rock.

Geological hammer: Used to break down the mineral to assess whether or not it has cleavage, and to detect fractures

Pocketknife: Used to define mineral tenacity; the tenacity of the mineral can be silky, malleable, sectile, elastic, or flexible.

17. Volcanoes are holes or cracks in the lava-flowing crust of the earth. They are normally placed on the borders of tectonic plates as they are created as the plates clash and create gaps. In other words, volcanoes located at convergent-plate boundaries.

I am joyous to assist you anytime.

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3 years ago

Best define gene flow?

Maslowich

Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another. Gene flow includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries.

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3 years ago

Behaviors such as stress, exercise, eating patterns, and tension ______ various aspects of the hormonal system.

Olenka [21]

Answer:

Activates or suppresses

Explanation:

The hormonal system or the endocrine system involves chemical systems where feedback loops of hormones are released directly into the circulatory system by internal glands.

It involves the interaction between the hypothalamus, pituitary glands and sex glands.

Release of hormones is dependent of signalling therefore behaviors such as stress, eating patterns and tension can activate or suppress various aspects of the hormonal system.

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If the data below were put into a graph Bart which animal would have the lowest bar on the bar graph

IgorLugansk [536]

There needs to be a photo if you want help...

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