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3 years ago

7. Describe one shark from the Cenozoic era. What does the shark look like ?

2 answers:

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Megalodon was the largest predatory marine animal in the Cenozoic Era. It can grow to a length of over 60 feet long and a weight of 100 tons.

vlabodo [156]3 years ago

3 0

the Carcharodon megalodon is an extinct megatoothed shark. megalodon was an apex predator of its time, and possibly the largest and most powerful macro-predatory fish that ever lived. Carcharodon may have approached a maximum of around 67 feet in total length.

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Which statements explains what the fossil records indicates? Check all that apply.

ArbitrLikvidat [17]

Answer:

b many ogansisms have become exinct

Explanation:

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3 years ago

Read 2 more answers

Because oxygen is circulated throughout the body via the bloodsteam, there is a strong connection between the cardiovascular sys

Mnenie [13.5K]

Answer:

Because oxygen is circulated throughout the body via the bloodstream, there is a strong connection between the cardiovascular system and the respiratory system.

Explanation:

The cardiovascular system is responsible for the transport of oxygen to all tissues of the body, in addition to the removal of carbon dioxide, which depends on the close interaction with the respiratory system.

A summary of the strong connection between the cardiovascular and respiratory systems is :

Blood contains red blood cells, which are responsible for transporting O₂ and CO₂ by binding to the hemoglobin molecule, present in these structures. The respiratory system is responsible for providing air with O₂ and removing CO₂, a process that depends on gas exchange at the level of the pulmonary alveolus.

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2 years ago

The surgical placement of an artificial joint is known as

Alekssandra [29.7K]

Answer:

Arthroplasty

Explanation:

The restoration of function of a joint is called Arthroplasty. The bone functions are restored by maintaining the bones through resurfacing. Some times artificial joints are also used instead of resurfacing the existing bones.

Arthroplasty is a method to cure Osteoarthritis, or degenerative joint disease where joint cartilages reduces with age.

Also when medical treatments no longer make any impact on the joints of bone pain then Arthroplasty is done.

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3 years ago

A researcher is interested in the effects of nitrate and phosphate on plant growth and sets up an experiment in which groups of

uysha [10]

Answer:

an independent variable

Explanation:

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2 years ago

Dr. stevens is examining the dna sequences of a group of mice. he notices that in one of the mice, one nucleotide pair is substi

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Out of the following given choices;

A. The mouse has a completely different DNA sequence than the other mice.

B. The substituted nucleotide has the same directions as the original nucleotide.

C. Substitutions in the nucleotides of a mouse's DNA never affect their phenotypes.

D. DNA sequences don't determine the color of a mouse's fur.

The answer is B. Most probably, the nucleotide substitution did not translate to a change in the amino acid sequence in the translated protein. As you may be aware, most amino acids are coded by more than one codon. For example, Leucine is coded for by CTT, CTC, CTA, CTG, TTA, TTG. Therefore, a substitution, that causes a change to either one of the sequences will not change the amino acid.

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3 years ago