All categories

3 years ago

What are the abiotic factors a polar bear needs to survive in the tundra?

1 answer:

7 0

abiotic factors that affect polar bears are the cold, snow and water. The extreme cold in the Arctic region that the polar bear inhabits means that it has adapted in several ways. The polar bears have grown long, thick fur and have a thick layer of blubber just under the skin. They also have small ears and tails, which reduces the loss of cold through these areas.

You might be interested in

What type of reaction is: sulfuric acid + potassium hydroxide -> potassium sulfate + water?

aleksley [76]

Answer:

Double replacement reaction

Explanation:

Now, let us first write the reaction equation properly:

H₂SO₄ + 2KOH ⇒ K₂SO₄ + 2H₂O

The above reaction is a neutralization reaction between an acid and a base whose product gives salt and water only at most instances.

From here, we can observe that the species displaces on another in their ionic state. Hydrogen replaces potassium and water is produced. Potassium combines chemically with sulfate ions to give the salt of potassium.

4 0

3 years ago

What attraction helps<br> to hold a atoms<br> together?

HACTEHA [7]

Answer:

The forces that hold atoms together are the electrical force and the strong force, which is stronger than the electrical force.

ღ ღ ღ ღ ღ ღ Hope This Helpsღ ღ ღ ღ ღ ღ

7 0

3 years ago

Click on the box to choose which compound has a greater difference in electronegativities of its members. Use the

4vir4ik [10]

Answer:

See the example below.

Explanation:

Let us make an example with a group of compounds to apply the general <em>trends of electronegativities</em> within families to find which compound has a greater difference in electronegativities.

Use this group.

a. HBr

b. HI

c. HF

d. HCl

e. H₂

Br, I, F, and Cl belong to the halogen family (group or column 17 of the periodic table).

Electronegativity is a relative measure of how strong an atom atracts the bonding electrons in a compound.

Since the strength of attracion of the valence electrons by the nucleus of an atom decreases as the size of the atom incease, in a family of elements (same group) the electronegativity decreases as you go down in the group.

The order of the halogens from top to bottom in the column in the periodic table is F, Cl, Br, and I.

Thus, the order of their electronegativiies is: F > Cl > Br > I. F is the most electronegative atom, and all those elements have higher electronegativy than H. (The electronegativiy of I is 2.66 and the electronegativity of H is 2.2). Thus, including H, the rank of the electronegativities is F > Cl > Br > I > H.

Thus, the greater difference in electronegativities is for HF (option a.).

Note, that the difference in electronegativites of the atoms of the molecule H₂ is zero, since both atoms have the same electronegativity.

3 0

3 years ago

Read 2 more answers

Select the three hypotheses that explain why being born in the United States leads to a higher chance of developing allergies

ra1l [238]

The three hypotheses that explain why being born in the United States

leads to a higher chance of developing allergies include the following:

The weather patterns in the United States bring more allergens compared to other countries.

Other factors which might influence why there are more children with allergies in the United States include climate, obesity, and the typical western diet with high amounts of processed foods.

The hygiene hypothesis claims that children in the United States are not exposed to enough germs in their infancy and childhood to develop their immune system‘s properly.

Allergies are caused by a host of factors such as :

Climate

Diet

Immune system

These factors is the reason why the chosen hypotheses are the most

appropriate.

Read more about Hypotheses here brainly.com/question/10854125

7 0

2 years ago

What are the main types of Star clusters check all that apply

Oksana_A [137]

Answer:

The three basic types of clusters astronomers have discovered are globular clusters, open clusters, and stellar associations. ...

Globular clusters were given this name because they are nearly symmetrical round systems of, typically, hundreds of thousands of stars. ...

Open clusters are found in the disk of the Galaxy.

4 0

3 years ago

Read 2 more answers