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Mamont248 [21]
3 years ago
14

If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result? Less water would be av

ailable on Earth's surface Less solar energy would reach Earth's atmosphere More oxygen gas would be found in Earth's atmosphere . More carbon dioxide gas would be found in Earth's atmosphere .

Biology
1 answer:
jolli1 [7]3 years ago
4 0

Answer:

4th one is correct :)

More carbon dioxide gas would be found in Earth's atmosphere

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What is the density of a liquid that has a mass of 5 g and a volume of 10ml?
Sonja [21]

Answer:0.5 g/cm

Explanation:

calculate the density : we'll use the formula below

density = volume over mass

Usually, density will have units of  

g

m

L

when dealing with a liquid or units of

Usually, density will have units of  

g

m

L

when dealing with a liquid or units of  

g

c

m

3

when dealing with a solid.

The mass has units of grams,  

g

.

The volume can have units of  

m

L

or  

c

m

3

We are given the mass and the volume, both of which have good units. All we have to do is plug the given values into the equation:

D

e

n

s

i

t

y

=

5

g

10

c

m

3

Thus, the substance has a density of  

0.5

g

c

m

3

.

4 0
3 years ago
The chromosomal mutation in the zygote can be traced back to which of the following? (4.3, 4.4)Immersive Reader
lawyer [7]

The chromosomal mutation in the zygote can be traced back to "Chromosome 6 in the egg cell".

<u>Option: B</u>

<u>Explanation:</u>

In germ cells i.e. egg or sperm cells, the mutations in chromosome often happen during the meiosis phase. The number of chromosomes in egg cells or sperm cells must be haploid, so that diploid chromosomes form zygote on fertilization. Chromosome mutation in meiosis leads in an additional set of chromosomes or structural defects in the chromosome.

Chromosomal mutations are often caused by chemical agents or by mutagens. The homologous chromosomes are segregated from sister chromatids throughout cell division, any abnormality at this point allows the chromosomes to be unequally divided or not disjuncted, same is observed in the situation seen in egg cell chromosome 6.

3 0
3 years ago
What feature of DNA allows for faithful copies to be made during DNA replication and passed on to the daughter cells? If you can
otez555 [7]

Answer:

complementary base-pairing rules

Explanation:

DNA is the genetic material of living cells. It is a long chain of double-stranded molecules, in which each strand is complementary to one another i.e. Adenine base is paired with Thymine base while Guanine base pairs with Cytosine base following the complementary base pairing rule as proposed by Chargaff. This pairing is responsible for the double helical structure of the DNA.

The complementary base pairs that a DNA molecule contains make it able to produce identical copies of itself during replication or duplication. Before replication of DNA can occur, the double strands need to unwind to form two separate strands, which serves as a template for the synthesis of new complementary strands.

In this manner, each new strand contains one template strand and one complementary strand, which forms two new double helix that is identical to the original strand. This two identical copies of DNA gets separated into two daughter cells, which is the essence of the DNA replication.

5 0
3 years ago
How is vascular tissue arranged in dicot stems?
Slav-nsk [51]
In bundles in a ring is how a vascular tissue is arranged in dicot stems. 

Your answer is A. 
4 0
3 years ago
Read 2 more answers
In Labrador dogs, black coat is dominant to chocolate, normal vision is dominant to progressive retinal atrophy (PRA), and norma
AVprozaik [17]

Answer:

In Labrador dogs, black coat is dominant to chocolate, normal vision is dominant to progressive retinal atrophy (PRA), and normal hip joint is dominant to hip dysplasia. All these genes assort independently. Two dogs that are heterozygous for alleles of all three genes are crossed. Using rules of probability (not a Punnett square), what is the chance that the first pup born to these dogs will be chocolate, have normal vision, and have normal hip joints?

BbVvHh x BbVvHh= BBVVHH, BbVvHh, BbVvHh, bbvvhh

Bb= black coat dominant

Vv= Normal vision dominant

Hh= Normal hip join dominant

probability of having a first born of these dogs will be chocolate, have normal vision and have normal hip joint is 0

Explanation:

As the punette square gives 3:1 phenotype having three black coat, normal vision and normal hip joint and one chocolate, progressive retina altropy and hip dysplasia

3 0
4 years ago
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