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likoan [24]
3 years ago
6

SOMEONE PLEASE HELP ME WITH THIS I WANT TO PASS THIS TEST !!!

Biology
2 answers:
Oliga [24]3 years ago
7 0

Answer:

Presence or absence of a cell wall and chloroplasts.

Explanation:

It's D.

inn [45]3 years ago
6 0

Answer:

I would say D

Explanation:

Because it looks the most correct out of them all

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The new Hazard Communication Standards provide teachers and students the right to __________ chemical hazards.
Aleonysh [2.5K]

The new Hazard Communication Standards provide teachers and students the right to manipulate chemical hazards.

Chemical hazards are non-biological substances that can cause damage to health. These are used in different enterprises, companies, school, universities and laboratories for different purposes such as cleaning, disinfection, scientific experiments, among others. When handling them, <u>employees are exposed to them and are vulnerable to harm from these chemicals</u>.  

There are many types of hazardous chemicals to be wary of, such as:

  • Carcinogens
  • Neurotoxins
  • Acids
  • Systemic toxins
  • Asmogens
  • Silica dust
  • Lead

In the workplace, exposure to these substances represents a real occupational hazard and there must be regulations to ensure that they are safe to handle.

The Occupational Safety and Health Administration (OSHA) is the agency of the U.S. Department of Labor which determined the Hazard Communication Standards. <u>This is a document with the necessary information to study the hazards of the chemical substances used by different employees in the companies</u>, so that they are aware of the dangers of these substances. These employees have the right to know exactly what compounds they handle and the risks involved in their use as well as the precautions and care to be taken.

Therefore, by having these safety standards in place in schools and universities, teachers and students have the possibility and the right to handle chemical hazards safely to be able to conduct the class normally and learn what is necessary.

Learn more about chemical hazards here: brainly.com/question/13113515

6 0
2 years ago
A rock sample has a mass of 16 grams and a volume of 8 cubic centimeters. When the rock is cut in half, what is the volume and d
spayn [35]

Answer:

Volume= 4 cm³

Density= 2 g/cm³

Explanation:

We have the following data:

volume= V= 8 cm³

mass= m= 16 g

The density is the mass per volume of a substance, so the density of the rock is:

density= d= 16 g/8 cm³= 2 g/cm³

When we cut the rock in half, we have a half volume and a half mass:

V= 8 cm³/2= 4 cm³

m= 16 g/2= 8 g

But the density is not altered because it is an intrisic property - it does not change with the amount of subtance. Thus, the density of a half rock is:

d = m/V= 8 g/4 cm³= 2 g/cm³

6 0
3 years ago
Which of the following is an example of phagocytosis? : A cell takes in large amounts of water. A cell in the thyroid gland secr
mihalych1998 [28]

Answer:

An amoeba wraps its membrane around a small unicellular organism to eat it.

Explanation:

4 0
3 years ago
Which characteristics do all bacteria and archaea have in common?
Alex Ar [27]

Answer:

c

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3 years ago
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Select the appropriate term to complete the sentences below. A is a natural material used by humans that cannot be replaced. A i
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Answer:

non renewable and renewable

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