Water mixing with carbon dioxide from the air and changing the properties of limestone is an example ofa. chemical weathering.
b. erosion.
c. physical weathering.
d. rock weathering

Answers

Answer 1

Answer: It is an example of chemical weathering.
Because the carbon dioxide mixed with the air changes the chemical composition of limestone.

Hope it helps.

Answer 2

Answer:

The correct answer is A. chemical weathering!

Related Questions

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What are particles of carbon otherwise known as, and what kind of pollution do they cause???

An unstable nucleus loses the most mass if the nucleus emits(1) an alpha particle (3) a positron
(2) a beta particle (4) a gamma ray

Answers

1. an alpha particle

gamma rays are formally massless, positrons and electrons (beta particles) have negligible mass, but alpha particles have about 4 amu of mass

What information does a chemical formula of a compound provide?a. The type and amount of elements
b. The different kinds of compounds included within the chemical formula
c. The types of molecules present in a formula
d. The correct amounts of substances to mix together to make a formula

Answers

I think the best option is A. A chemical formula of a compound provides information on the type and amounts of elements in that compound. For instance, we have NaOH. From the given formula, we see that it contains the elements sodium, oxygen and hydrogen. Also, their corresponding number of molecules.

Describe the evidence of changes in organisms in the Cambrian Era that are reflected in the fossil record.

Answers

Answer:

Morphology and phylogenetics revealed by fossils. Perhaps the strongest evidence to support the Cambrian evolutionary explosion of animal forms is the first clear appearance, in the Early Cambrian, of skeletal fossils representing members of many marine bilaterian animal phyla

Explanation:

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Final answer:

The Cambrian era saw significant changes in organisms reflected in the fossil record, including the emergence of complex multicellular life forms and the diversification of species. Fossils such as trilobites and brachiopods provide evidence of this biodiversity and adaptive radiation.

Explanation:

The Cambrian era is known for the rapid diversification of life forms, marked by the appearance of complex multicellular organisms. The fossil record from this era provides evidence of key evolutionary developments such as the emergence of hard-shelled animals, intricate body plans, and the colonization of different ecological niches. For example, the presence of trilobites, brachiopods, and archaeocyathids in the fossil record reflects the incredible biodiversity and adaptive radiation that occurred during the Cambrian.

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Seriously help please??Assuming all of the atoms attached to the central atom were identical, which of the following geometries would produce a nonpolar molecule? (Only 3 choices are correct.)

-linear
-trigonal planar
-tetrahedral
-trigonal bipyramidal
-octahedral
-bent (angular)

Answers

Covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Linear, tetrahedral and trigonal planar geometries would produce a nonpolar molecule.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Using VSEPR and electron pair repulsion, we can easily find that linear, tetrahedral and trigonal planar geometries would produce a nonpolar molecule if we assume that all of the atoms attached to the central atom were identical. Any geometries which have center of symmetry will produce non polar molecule.

Therefore, linear, tetrahedral and trigonal planar geometries would produce a nonpolar molecule.

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Using VSEPR and electron pair repulsion, we can easily find that:

linear
tetrahedral
trigonal planar

are all non polar molecules.

Every substance is either an element or a ____. Fill in the blank. Molecular Compounds is the chapter I'm on.

Answers

Every substance is either an element or a compound.
There is ionic compounds, molecular compounds, but they are all considered compounds.
Hope I helped.

compound is the right answer.

All fossil fuels contain this element. iron hydrogen copper magnesium

Answers

Answer : Option B) Hydrogen

Explanation :

All fossil fuels contains hydrocarbons in it. Amongst the given options hydrogen is the correct answer. Except that it contains carbon in it. Hydrocarbons are those class of compounds which contains hydrogen and carbon as element in it.

They are considered to be good fuels because they naturally bring out complete combustion as they contain hydrogen and carbon in its compound form.

B)Hydrogen is the answer.......

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