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Svetach [21]
3 years ago
12

In a comparison of birds and mammals, the condition of having four limbs is.

Biology
1 answer:
Serga [27]3 years ago
8 0

Answer:

In a comparison of birds and mammals, the condition of having four limbs is a shared ancestral character

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What planet has no moon and a dense atmosphere
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Mercury has no moons and hardly any atmosphere because of because of this temperatures are about 800 degrees to -300

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Cats have been identified as an essential part of the life cycle for the protozoan that causes which disease?
s2008m [1.1K]

Cats are essential part of toxoplasmosis life cycle.

<h3>What is toxoplasmosis?</h3>

One of the most prevalent parasites in the world, Toxoplasma gondii, causes the disease toxoplasmosis (pronounced tok-so-plaz-MOE-sis). Typically, infection results from consuming tainted undercooked meat, coming into contact with contaminated cat feces, or mother-to-child transmission while pregnant.

Some persons with toxoplasmosis may experience flu-like symptoms, although the majority of afflicted individuals never show any signs or symptoms. Toxoplasmosis may result in life-threatening consequences for those with low immune systems and infants delivered to infected mothers.

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2 years ago
Covalent or ionic: transfer of electrons<br> covalent or ionic: sharing of electrons
belka [17]

When two atoms react, they form either of two kinds of bond, ionic bonds or covalent bonds.

Ionic bonds are the type of bonds where there is transfer of electrons from one atom to another.  The electrons are removed and from one atom and attached to  another. A good example is salt which is composed of sodium and chlorine. Sodium readily loses one of its electrons and chlorine readily accepts it. Before losing the electron, sodium has a positive charge, but then becomes negatively charged after giving up the electron. Chlorine has a positive charge before gaining the electron but becomes negatively charged after gaining the electron. These opposite charges between sodium and chlorine attract the two elements together to form the ionic bond.

Covalent bonds are the kind of bonds formed when two atoms share electrons. Here there is sharing, none of the atoms loses an electron and none gains. A good example is water which is formed when oxygen  shares two electrons, each with an atom of hydrogen.

 The Oxygen atom forms two covalent bonds with the pair of hydrogen atoms.

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3 years ago
Please help me and please no wrong answers.<br> How are gemstones classified?
aivan3 [116]
From what i am looking at they are classified as organic or inorganic gems
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3 years ago
Why is the modeling of ozone layer depletion more accepted than modeling for global warming?
tekilochka [14]

Ozone layer depletion is not a major cause of climate change. Global warming will be more significant contributor of climate change on earth.

<h3>What is ozone layer depletion and global warming?</h3>

Ozone layer depletion is the thinning of the ozone layer present in the upper atmosphere. This happens when ozone molecules interact with atmospheric chlorine and bromine atoms and break down. One chlorine molecule is capable of destroying one ozone molecule. It is not produced as quickly as it is destroyed.

The phenomenon of rising average air temperatures close to the surface of the Earth over the previous one to two centuries is known as global warming. This change has disturbed the climatic pattern of the earth. The burning of fossil fuels, logging of forests, and raising of livestock all have a rising impact on the climate and temperature of the planet. This increases the greenhouse effect and causes global warming by adding a significant amount of greenhouse gases to those that are already present in the atmosphere.

Ozone layer depletion is more acceptable than global warming because global warming is more responsible for the climate change in the earth, it traps huge amount of gases which rise the earth's temperature. Climate change may not primarily be caused by the ozone hole. Although a larger ozone hole does not contribute to global warming, the presence of ozone, a greenhouse gas, has a warming impact. The ozone hole itself has a minor cooling effect (about 2 % of the warming effect of greenhouses gases) because ozone in the stratosphere absorbs heat radiated to space by gases in a lower layer of Earth’s atmosphere. A small amount of heat can escape from that area into space as a result of the loss of ozone.

Learn more about ozone layer and global warming here:

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2 years ago
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