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son4ous [18]
3 years ago
7

What has caused most of the mass extinctions on earth?

Biology
1 answer:
Leto [7]3 years ago
5 0
Global warming/climate change
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A carotenoid is a yellow-orange pigment that absorbs _____ light.
alexandr402 [8]

The correct answer to this question is option"blue-green".

Reason:

The carotenoid is a yellow-orange pigment that absorbs blue light which gives plants there green color.

Therefore the answer should be option B.

Hope this helps!!!

6 0
3 years ago
Read 2 more answers
The presence of a mutualist might allow what to happen in terms of population dynamics? a) The species could surpass its carryin
patriot [66]
B is the right answer
3 0
3 years ago
The wechsler intelligence scale for children (wisc) is a good indicator of innate "genetic" ability for:
goblinko [34]

Answer:

The wechsler intelligence scale for children (WISC) is a good indicator of innate "genetic" ability for children of six to sixteen years old.

Explanation:

Wechsler Intelligence Scale for Children (WISC) is basically a system of testing IQ of children from six to sixteen years old. This testing was created by David Wechsler, who stated that intelligence is a global quality and it should be reflected in children's verbal as well as non-verbal abilities.

This testing system is used by schools for several purposes:


• To evaluate the performance of kids during placement process.  

• It is also used to evaluate abilities of dis-abled children or  deferentially able children.

• IQ scores from WISC can be used to diagnose the problems of the children such as mental re-tardation or some specific learning dis-ability. It can also be used to determine the problems of the children who face hyperactivity or attention deficiency.


• In addition, the test can also diagnose brain related and neuro-psychological disorder.


Point to remember:

The WISC system is not useful to determine the extreme form of intelligence like IQ below 40 and above 160. Wechsler himself focused on this point many times that test is not adequate for children with IQs of below 70 or above 130. Despite of this fact, people use this test to determine the intelligence of deferentially able children who usually have IQ above 130 that is not very appropriate thing.

<em>Note:</em><em> This answer is very generic based on the statement of the question. If you have some specific options of the questions, please post it again with them or comment. Thank you.</em>



3 0
3 years ago
4. Which of the following elements does not want to have eight valence electrons? a. magnesium c. hydrogen b. oxygen d. nitrogen
Cloud [144]

Answer:

Hydrogen.

Explanation:

Hydrogen is the simplest chemical element that exists. The symbol for the chemical element Hydrogen is "H" and it is a colourless, tasteless, odorless, and highly flammable gas.

Hydrogen is a chemical element found in group (1) of the periodic table and as such it has one (1) electrons in its outermost shell. Therefore, Hydrogen has an atomic number of one (1) and a single valence electrons because it has only one proton and one electron in its nucleus.

Based on the octet rule which states that atoms of chemical elements gain, lose or share electrons so as to have eight (8) electrons in their valence shell. Therefore, atoms of chemical elements bond in order to attain the electronic configuration of a noble gas i.e a full valence shell which comprises of eight (8) electrons.

However, the chemical element "Hydrogen" is an exception to the octet rule because it is only able to hold a maximum of two (2) valence electrons in its outermost shell to become full.

<em>Hence, Hydrogen is an element which does not want to have eight valence electrons. </em>

7 0
3 years ago
Family pedigrees are based on scientific evidence that is described by the Hippocratic oath. the Human Genome Project. Mendel’s
melomori [17]
The answer to the question that is being presented above would be the phrase 'Mendel's law of inheritance'. <span>Family pedigrees are based on scientific evidence that is described by Mendel's law of inheritance. The other choices do not describe the statement better.</span>
6 0
3 years ago
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