Helium has an atomic number of two, so its outer energy level is full. Helium is considered _____.neutral
inert
an anion
a cation

Answers

Answer 1

Answer: Helium has an atomic number of two, so its outer energy level is full. Helium is considered inert. The correct option among all the options given in the question is the second option. It is actually non toxic in nature. Helium is also colorless, odorless and tasteless in nature. It is the first in the noble gas group of the periodic table.

Answer 2

Answer:

Answer:

inert

Explanation:

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The scientific name for a white oak is Quercus alba; the scientific name for a red oak is Quercus rubra. What does this tell you about the organism? A. Red oaks are grouped in the genus alba.
B. White oaks are grouped in the genus Quercus.
C. White oaks are grouped in the same species category as red oaks.
D. Red oaks are grouped in the species Quercus.

Is it B????

Answers

The answer is B. White oaks are grouped in the genus Quercus.

According to binomial nomenclature, a formal system of naming species, a name of species is composed of two parts. The first word indicates the organism's genus classification, the second word indicates the species within a genus. So, the first word Quercus indicates the genus in both cases, the second word alba or rubra indicates species within the genus Quercus.

A. is not the right answer because alba indicates species name, not genus name.
C. is not the right answer because white oaks and red oaks are different species, but the same genus.
D. is not the right answer because Quercus is not species but genus.

The answer to the question stated above is letter B.White oaks are grouped in the genus Quercus.

The scientific name for a white oak is Quercus alba; the scientific name for a red oak is Quercus rubra. This simply implies that White oaks are grouped in the genus Quercus.

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Answers

Answer:

Atoms

Explanation:

Identify two organisms in the food web that compete for food.

Answers

Answer:

Hawks, foxes

Explanation:

Producers: Cacti, bushes, acacias, flowers, brush.

Primary Consumers: Insects, lizards, rodents.

Secondary Consumers: Tarantulas, scorpions, lizards, snakes.

Tertiary Consumers: Hawks, foxes.

Diatoms have cell walls composed of _____.a. silicon dioxide
b. carbon dioxide
c. chitin

Answers

The correct answer is a - silicon dioxide.

Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.

Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.

Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.

Answer:

Diatoms have cell walls composed of silicon dioxide.

1. Explain how cholesterol plays an important role in at least two different human body systems.

Answers

1) Cholesterol is important for the production of hormones, for example, some hormones are synthesized (made) from cholesterol - for example stereoid hormones.

2) Vitamin D is also made from cholesterol- it's an important vitamin used to support the absorption of calcium

In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. Which conclusion is that?Cancer cells stop dividing when they touch.
Cancer cells are unspecialized cells.
Cancer cells lack contact inhibition.
Cancer cells reproduce slowly.

Answers

cancer cells lack contact inhibition meaning meaning that in normal cells when they come in to contact with other cells they stop reproducing only cancer cells do not. They just keep reproducing and growing destroying everything in their path. An example of this is a tumor.

Answer:

C. Cancer cells lack contact inhibition

Explanation:

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