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podryga [215]
3 years ago
13

What is an example of reactivity?

Biology
2 answers:
sattari [20]3 years ago
8 0

Answer:

Im pretty sure that it’s D.

hope that helps!☺️

Explanation:

igor_vitrenko [27]3 years ago
6 0

Answer:

D. A bicycle rusting.

Explanation:

A. is incorrect because tearing a piece of paper is a physical change, not a chemical change.

B. is incorrect because we are just heating up the object. That only changes how fast the particles are moving and the change in state of matter.

C. is incorrect because we are adding heat to change a state of matter (from solid to liquid) and it is a physical change.

Therefore, only D. is the correct answer. Iron rusts, and when it does, it chemically changes into an iron oxide (rust).

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Answer:

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Respuesta:Presentan una gran variedad de peligros, estos dependen de que tipo sean los residuos contaminantes, ya que varían en muchas características como los tóxicos, patogénicos, etc.

Como se puede observar existen muchos tipos de basuras y con diferentes características diferentes que llegan a variar por su peligrosidad u toxicidad.

6 0
3 years ago
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4 years ago
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As bactérias não contêm um núcleo. Explique como eles podem funcionar sem ele.

Explanation:

espero ter ajudado boa noite

5 0
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Describe pros and cons of genetic engineering to modify food and in-vitro fertilization.
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