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Archy [21]
3 years ago
7

Calcium sulfide forms when calcium loses 2 valence electrons to sulfur. What type of a bond is formed? covalent ionic

Biology
1 answer:
il63 [147K]3 years ago
4 0
A covalent bond is formed
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If someone with auburn hair has children with someone with red hair (but whose mother had black hair ) what are the genotype and
tensa zangetsu [6.8K]

The phenotype is - 75 % red and 25 %brown.

The genotype is hRhR - 25%

hBkhR - 50%

hBrhBk - 25%.

<h3><u>Explanation:</u></h3>

The cross given here is a simple dominant - recessive relationship between the three types of alleles of hair colour. The genes of this characteristics are present in autosomes, so will be segregated equally among all the sexes of the offsprings.

Now the genotype of auburn and red with black mother is given. So during gametogenesis, the gametes from the parents will be

Father - hBr and hR

Mother - hBk and hR

So, the probable combinations are hBrhBk, hBrhR and hBkhR.

The frequency of the combinations are 25%, 25% and 50% respectively.

The phenotypic ratio will be red : brown as 3:1.

6 0
3 years ago
What are two advantages of using the SI system?
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 1. No conversions. The greatest advantage of SI is that it has only one<span> unit for each quantity ( a type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize.

2. </span><span>No fractions. SI uses decimals exclusively, eliminating clumsy fractions and mixed numbers.</span>
8 0
3 years ago
What do your bones do besides supporting and protecting your body?
Marizza181 [45]

Answer:

your bones also help you to stand and protect your organs.

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These graphs show a change in four types of greenhouse gases from 1975 to 2015. Based on the results of your experiment, how mig
Arada [10]

Answer:

The first one

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3 years ago
How do temperature humidity and pressure vary within an air mass​
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A. Temperature, humidity, and pressure are basically the same all through an air mass.

B. Temperature at the border of an air mass is always higher than in the middle.

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