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lianna [129]
3 years ago
8

What factor determines that an oxygen atom can form two covalent bonds while a carbon atom can form four covalent bonds?

Biology
1 answer:
goblinko [34]3 years ago
3 0


The factor that determines this is the atomic structure of these two elements which determines how many electrons are found on the outer shell or energy level of these elements.

Ability  to form single, double or even multiple covalent bonds is directly dependent on the number of electrons  on the outer energy level.

The atomic structure of oxygen 2:8:6 with the outer shell having 6 electrons. Oxygen readily accepts and share 2 more electrons from another element  forming two covalent bonds.

Likewise carbon has an atomic structure of   2:4 with 4 electrons in the outer shell. It readily shares these electrons with other elements to form 4 covalent bonds with them.


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Rabbits are introduced into a grassland area. Which action of the rabbits would harm the buffalo that live in the grassland?
ollegr [7]
The most likely answer choice should and would be B, given that rabbits are herbivores (meaning that they only eat vegetation and plants, including grass). Buffalo's food source(s) and diet consists of grass as well. If enough rabbits are introduced into a grassland area, they will furthermore consume more grass, in turn limiting the food source of the buffalo. 

''Attacking'' prey doesn't necessarily make sense, given that buffalos do not 'prey' on any animal and rabbits themselves are prey.

A to a lesser extent can make sense, although I doubtable.  B's most likely the answer. 
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3 years ago
Explain four treatment options for hazardous waste.
marusya05 [52]

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3 years ago
Three species of lizard, labeled A, B, and C, are being studied using molecular analysis by two research colleagues in different
Andreyy89

Answer:

The most appropriate answer would be option B.

The flaw in their reasoning is that they compared different molecules in a different set of organisms.  

For example, they compared the DNA of lizard A and B whereas they compared the RNA of lizard B and C.

In addition, the mutation rates of different molecules (DNA and RNA) are different and thus, comparison of DNA in one set of organism and comparison of RNA in another set cannot be used as the basis for the conclusion.

7 0
3 years ago
Read 2 more answers
A cell from a turkey wing contains 40 chromosomes, how many chromosomes are there in a unfertilized chicken egg
patriot [66]
20 chromosomes because unfertilised eggs contains half the number of bodily chromosomes
4 0
3 years ago
What do the variables in the Hardy-Weinberg equation represent?
uranmaximum [27]

The answer is

frequency of the homozygous recessive genotype --> q^2

frequency of the heterozygous recessive genotype --> 2pq

frequency of the recessive allele --> q

frequency of the dominant allele --> p

frequency of the homozygous dominant genotype --> p^2

Hope this will help for all

4 0
3 years ago
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