A group of scientists are studying the microhabitat on the inside of a hollow log. Twice a year, they take samples of the wood and make observations about organisms living in the log. They observe that the types of bacteria and fungi living in the log change over time. The properties of the wood inside of the log also change.

Which of the following statements best describes why the types of organisms in the log change over time?
A.
Some organisms are adapted to live in a wide range of conditions.
B.
Organisms in the log do not compete for available resources.
C.
Organisms in the log stabilize the conditions in their environment.
D.
Different organisms are adapted for different conditions.

Answer:

In the valence shell, it should have 8 valence electrons.

Explanation:

The reaction is included in a redox reaction

Further explanation:

Given

Reaction

2 Ca + O₂ → 2 CaO

Required

a redox reaction

Solution

Redox reactions are reactions where there is a change in oxidation number

Oxidation is an increase/increase in oxidation number, while reduction is a decrease/decrease in oxidation number.

Reducing agents are substances that experience oxidation  and oxidizing agent are substances that experience reduction

in the above reaction is included in a redox reaction because there is a change in oxidation number

Ca⇒Ca²⁺+ 2e⁻(for balanced equation : 2Ca⇒2Ca²⁺+4e⁻)

Oxidation ( 0 to +2)

O₂+2e⁻⇒O²⁻(for balanced equation : O₂+4e⁻⇒2O²⁻)

Reduction (0 to -2)

Answer:

b covalent . A covalent bond holds atoms that share valence electrons

Answer:

A. Instructions for inherited traits

Explanation:

Your traits (what makes who you are) are from your DNA, and the DNA sends instructions on how your body preforms to use/inherit those traits.

I don’t know a lot about DNA, but this is the best information I can provide.

Hope this helps! :)

Answer:

309.2 ml of oxygen

Explanation:

2 ( 12X2 +Ix 2 ) = S2 ml

O2 = 5 x 16 x 2 = 160 ml

volume of O2 needed = 160×100. 5 / 52 = 309.2 ml

Answer:

d

Explanation:

Answer:

Explanation:

A biography is a specialized form of history. It is an account of events based upon the example of one person's life. There are four basic types of biographies: historical fiction, academic, fictional academic, and the prophetic biography.

Answer:

yeah we cant see it

Explanation:

Answer:

When you rub your hands together thats mechanical energy. Once you hands warm up its heat energy.

Answer: Group 14

Explanation:

It's a carbon atom with 4 valance electrons.

Answer:

6.707 × 10¹⁷

Explanation:

From the information given:

40 ^ K kütlesi = sütteki K kütlesi × 40 ^ K / 100 kütle yüzdesi

nerede;

sütteki K kütlesi = 1.65 mg of K/mL × 225 mL = 371.25  mg of K

∴

40 ^ K kütlesi = 371.25  × 0.012/100

40 ^ K kütlesi = 0,04455 mg = 4.455 × 10⁻⁵ grams

40 ^ K mol sayısı = 40 ^ K kütlesi / molar kütle

= 4.455 × 10⁻⁵/40

= 1.11375 × 10⁻⁶

Son olarak, 40 ^ K = mol × Avogadro sayısı atomları

= 1.11375 × 10⁻⁶  × 6.022 × 10^23

= 6.707 × 10¹⁷

Answer:

Solute

Explanation:

the substance that dissolves in a solvent to produce a homogeneous mixture.

Answer: platinum

Explanation:

i think

Answer true

Explanation:

Every recognized species on earth (at least in theory) is given a two-part scientific name. ... These naming rules mean that every scientific name is unique. For example, if bluegill sunfish are given the scientific name Lepomis macrochirus, no other animal species can be given the same name

State of matter refers to the forms in which matter can exist.

There are basically three states: Solid, Liquid, Gaseous.

But nowadays we extend this and add two more states: Plasma, Bose-Einstein Condensate

Answer:

Magma

Explanation:

If you’re talking about what erupts from a volcano then lava but the lava turns into magma when it hardens

Answer:

Lava

Explanation:

When magma erupts from the volcano it becomes lava

Answer:

On the pereiodic table.

Explanation:

44.95591 atomic mass units

Have a Merry Christmas!

Answer:

The correct answer is option A, that is, one valence electron in its third energy shell and option C, that is, 11 electrons and 11 protons.

Explanation:

The outermost electrons and the ones that take part in the process of bonding are termed as valence electrons. The atomic number of sodium is 11, thus, it possesses 11 protons and the atoms are neutral so it suggests that sodium has 11 electrons. By electronic configuration, it can be seen that in sodium, two electrons are present in the first shell, 8 in the second, and only one electron in the third shell, that is, 2.8.1. The electron present in the third shell is the valence electron.

Answer:

45.77 × 10²³ atoms

Explanation:

Given data:

Number of moles of iron = 7.6 mol

Number of atoms = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

7.6 mol  ×  6.022 × 10²³ atoms / 1 mol

45.77 × 10²³ atoms

Answer:

huaD?W

Explanation:

Answer:

object's inertial property

Explanation:

The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

Answer:

The mass of the object internal property, or the amount of matter it contains

Explanation:

Hope this helps! Happy Holidays!

Answer:

Carbon is the only nonmetal element in the group

Explanation:

Carbon and silica are the non- metal which are placed in group 14.

Non-metals were elements on the periodic table's right side. Gases, liquids, and solids above are all examples of non-metals. Non-metals are not as lustrous as metals and have a drab color.

The carbon family belongs to Group 14. Carbon, silicon, germanium, tin, and lead are the five members. In their uppermost energy level, each of these elements possesses four electrons. Only carbon and silicon create nonmetal bonding among the Group 14 elements and form by sharing electrons .

To know more about non metal.

https://brainly.com/question/20602843.

#SPJ2

Answer:

For a 1:100 dilution, one part of the solution is mixed with 99 parts new solvent. Mixing 100 µL of a stock solution with 900 µL of water makes a 1:10 dilution. The final volume of the diluted sample is 1000 µL (1 mL), and the concentration is 1/10 that of the original solution

Explanation:

i hope that gives you an idea

Answer:

0.86 moles of CO₂

Explanation:

Given data:

Number of atoms of CO₂ = 5.2×10²³ atom

Number of moles = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

5.2×10²³ atom× 1 mol / 6.022 × 10²³ atoms

0.86 mol

Answer:

anemometer i believe :)

Answer:

Explanation:fff

Answer:

32 grams

Explanation:

Ignore the other answer. Two oxygen atoms have a mass of 32 grams. You can also arrive at this answer by subtracting the given values (i.e. 36 - 4 = 32).

Answer:

Explanation:

Mining affects biodiversity at multiple spatial scales (site, landscape, regional and global) through direct (i.e. mineral extraction) and indirect processes (via industries supporting mining operations, and external stakeholders who gain access to biodiversity-rich areas as the result of mining).

Explanation:

Given :

speed of light (c) =

[tex]3.00 \times 108m/s[/tex]

wavelength (λ) =

[tex]4.3 \times {10}^{ - 7} \: m[/tex]

Equation :

c = λv

v = c/λ

[tex]v = \frac{3.00 \times {10}^{8} }{4.3 \times {10}^{ - 7} } [/tex]

Simplify

[tex]v = 6.976744186 \times {10}^{14} [/tex]