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Firdavs [7]
3 years ago
7

Calcium oxide (CaO) forms when an atom of calcium loses two electrons, giving it a +2 charge and an atom of oxygen picks up two

electrons, giving it a –2 charge. What is calcium oxide?
Biology
1 answer:
a_sh-v [17]3 years ago
3 0
Calcium oxide is an ionic, chemical compound created by equal transfer of atoms. As described, calcium loses two electrons, giving it a +2 charge and an atom of oxygen picks up two electrons, giving it a –2 charge. This event is called ionic bonding where there’s a complete transfer of valence electrons between atoms. Usually, metals are the ones donating their valence electron (e.g. calcium) and it’s the non-metals who accepts the donated electrons (e.g. oxygen).
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Answer:

The organism is sterile because parts of the chromosomes in the zygote will only have a  single set of chromosomes rather than the ideal pair. The arctic fox will produce gamates with 25 chromosomes (a single set) while the red fox will produce gametes with 19 chromosomes (another set). These gametes are supposed to fuse and have their chromosomes paired. However notice that the offspring will have (25 – 19) six (6)  unpaired chromosomes. This means that during the formation of gametes in this hybrid offspring, there will be an issue in meiosis I which will result in nonviable gametes.

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3 years ago
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Cosmos episode 7
kirill [66]

During episode 7 of "Cosmos: A spacetime odyssey", Clare Patterson thanks the scientist who have come before him, among these, he mentions Charles Lyell and Michael Faraday.

Cosmos was a popular television science documentary series. Episode 7 titled "The Clean Room", explored the work of Clare Patterson and during said episode, as he awaits the sample from the spectrometer, Patterson proceeds to give thanks for the advancement of science by those who have come before him.

Patterson states that he wishes to give thanks to scientists who have come before him and proceeds to mention names such as:

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all of which were renowned scientists with great contributions to the knowledge we possess today. He ends the thank you by stating that they now know the age of the Earth and with a symbolic "We did it."

To learn more visit:

brainly.com/question/1640558?referrer=searchResults

3 0
3 years ago
In the female body, each egg is surrounded by a ____, which breaks open when the egg is mature.
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