Modern whales evolved from mammals that lived on land. Fossil evidence reveals that one characteristic that has changed over time is the position of whales nostris. The images below show the skills of a modern whale
and its ancestor, Pakicatus
Nostrils at front
of skull
Nostrils at top
of skull
Pakicetus
Eschrichtius
cientists think that the position of the nostrils gives modern whales an evolutionary advantage. Which of the following most likely describes how this adaptation is advantageous?
O The nostril position allows whales to obtain air more easily at the surface of the water.
The nostril position allows whales to obtain food more easily at the surface of the water.
O The space lett empty by the migrating nostrils has allowed modern whales to develop gills.
The space left empty by the migrating nostrils has allowed modern whales to develop teeth.

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Explanation: I just completed the Test.

The nostril position allows whales to obtain air more easily at the surface of the water is most likely describes the advantage of adaptation.

In biology, adaptation has three related meanings. It is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process.

The ability of living organisms to adjust themselves to their surroundings is called adaptation. Adaptations are the changes in structure or behaviour of an organism that will allow the organism to survive in that habitat.

Adaptations are unique characteristics that allow animals to survive in their environment. There are three types of adaptations: structural, physiological, and behavioral.

Learn more about adaptation:

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What is the medical term for the process or procedure that destroys or inhibits disease-causing microorganisms to prevent infection:

does the radiation from the sun to the sand lower the kinetic energy of the sand​

Use the graph and the table above to complete the table by estimating the amount of energy transferred near location B.

A.
1600 kilojoules

B.
300 kilojoules

C.
800 kilojoules

D.
400 kilojoules

E.
3200 kilojoules

Why is politics important for stopping climate change?
1. Because politicians are responsible for more greenhouse gas emissions than regular people.
2. Because climate change isn't really a scientific issue, only a political one.
3. It isn't, private companies are already doing everything necessary to combat climate change.
4. Because it's unlikely action will be taken fast enough without the government passing laws to reduce our impact on the
climate.

Volcanoes can form near coastal regions where an oceanic plate [blank] below a continental plate

The health department is responsible to make sure there are written directions for critical control point procedures.
True
False

Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color?

You have adopted a gray mouse, which you know is a wild type phenotype. When crossed with a white mouse, your gray mouse has a first litter of 3 gray mice and 2 white mice. In the second litter, you observe 3 gray mice and 4 white mice. What is the probable genotype of your gray mouse

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A botanist finds that when compared to pink flowers, the population of purple flowers is very high. Ten years later, the population of purple flowers is nearly gone, and the number of pink flowers has tripled. Why would this be?

1. Below is a diagram of the male
reproductive system. Which structure is
represented by D?
A. scrotum
B. testes
C. prostate gland
D. epididymis

Select the intended meaning of the idiom in the following sentence.
The President's announcement made Washington tremble.
O The people in the government grew anxious.
O The earth shook while the President spoke.

from his monohybrid crosses, Mendel developed his first law

Question 20 of 26
How many daughter cells does mitosis produce?
A) 2.
B) 4
C) 23
D) 46

The pathophysiology of osteomalacia involves a. collagen breakdown in the bone matrix. b. inadequate mineralization in the osteoid. c. crowding of cells in the osteoid. d. increased osteoclast activity.

18. Viruses are considered
because they can not perform the characteristics of life without a
19. Viruses are made of two basic compounds,
and a
made of protein.
20. A virus infects a cell by injecting
into a cell.

A large bowl contains a mixture of soil and iron powder. What would be the best way to separate the iron powder from the soil?​

Daphne identifies the entire sequence of nucleotides in a gene. Based on this information and the genetic code, she predicts the sequence of amino acids in the protein that the gene codes for. What is the MOST LIKELY reason that Daphne’s prediction would be incorrect?

The gene codes for a carbohydrate, and not a protein.
A mutation changes the genetic code that the cell uses.
The cell removes introns from pre-mRNA.
The cell removes introns from DNA.

The passing of electrons along a series of molecules, releasing energy bit- by-bit as they go, is called the 1. Calvin Cycle 2. the Citric Acid (Krebs) Cycle 3. the electron transport chain (ETC) 4. an aerobic process​

*anatomy & physiology question*

if you are at 120X and the field diameter is 8.0 mm what is the field diameter if you go to 30X magnification?

Choose all the answers that apply.
Eukaryotes _____.

are always multicellular
are always unicellular
may have evolved from prokaryotes
have membrane-bound organelles
have a true nucleus
are more primitive than prokaryotes

SUBJECT SCIENCE: how could the rocks from the Rocky Mountains and the Great Plains have such similar composition? (WRITE AT LEAST 5 SENTENCE)

Which two structures are found at the outside of the cell?

___is a process that tells cells to stop dividing if they touch each other.

Which activity can be accomplished using the genetic code?
O A polypeptide can be made into mRNA
. DNA can be made into mRNA
O RNA can be copied before mitosis.
O mRNA can be made into tRNA

look at the picture
​

Body Cells are
O A) 1N
O B) 2N

O C) 4N
OD) 21N

which statement describes what happens to rocky shorelines that absorb energy from ocean waves?

a sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wave passes through clouds of nitrous oxide, it’s wavelength changes to 16 m, while it’s frequently remains the same. What is it’s new speed?

In sexual reproduction, a sperm cell fertilizes an egg to form a zygote

A. True

B. False