The vertebrate lung first appeared in ___________.
Answer:
fishes
Explanation:
A progenitor feature found in early boney fish served as the basis for the development of the vertebrate lung.
What are vertebrate lungs?The lung of modern vertebrates evolved from a structure that was present in the ancestors of early boney fish.
Lungs in vertebrates originated as extra air-breathing organs in primordial fishes and were ventilated by buccal pumping when they first appeared. In more modern fishes, the organ formerly known as the lungs has been replaced with the hydrostatic swimbladder. This fundamental kind of unicameral lungs and the buccal pumping ventilation observed in these lungs can also be found in more modern amphibians.
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5. Animals depend on plants for carbon dioxide..... True or False
true they depend on plants forco2
Answer:
No
Explanation:
Animals get Carbon dioxide from the air, and carbon dioxide is emitted by burning of fossil fuel
A substance with a pH of 3 is how many more times acidic than a substance with a pH of 5?
please help!! what’s 11 and 14?
An organism has a diploid number of 32. What would be the number of chromosomes found in the
cells of this organism undergoing mitosis? Explain.
Answer:
There is no gamete formation meiosis in these organisms. A diploid zygote ( 2n = 32) will undergo replication to produce 4n = 64 chromosomes.
Explanation:
The number of chromosomes found in the cells of this organism undergoing mitosis would be 32.
What is Mitosis?Mitosis may be defined as a type of cell division that two genetically identical daughter cells from a single parental cell. In this type of cell division, each daughter cell has the same number and kind of chromosomes as compared to the parent nucleus.
During mitosis, a diploid cell produces two genetically identical daughter cells with the same number of chromosomes. Hence, in this question, an organism contains a cell of diploid nature with a number of chromosomes equal to 32.
As a result of this, the number of chromosomes found in the cells of this organism undergoing mitosis will remain the same and that is 32.
Therefore, the number of chromosomes found in the cells of this organism undergoing mitosis would be 32.
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1. What is an example of an illness that requires airborne precautions?
Answer:
measles
Explanation:
Shifting biomes could have consequences for the regions in which the shifts occur. Read the two cases below and decide which consequences would apply to one or both cases.Case 1: The biome of a small agricultural community in the western United States changes from grassland to desert. A species of migrating duck, which can carry bird flu, goes locally extinct.Case 2: The biome in northern Russia changes from tundra to taiga. Timber harvesting in the region becomes possible. Arctic foxes go locally extinct and are replaced by red foxes that commonly carry rabies.Sort each consequence based on whether it would apply to Case 1, Case 2, or botha. increased risk of wildfiresb. local economy suffersc. carbon storage decreasesd. agricultural production decreasese. carbon storage increasesf. disease vector range changesg. decreased water availabilityh. local economy thrivesi. species range changesCase 1Case 2Cases 1 and 2
Answer:
increased risk of wildfires- both
local economy suffers- Case 1
carbon storage decreases - Case 2
agricultural production decreases - Case 1
carbon storage increases - Case 1
disease vector range changes - Case 2
decreased water availability - Case 1
local economy thrives - Case 2
species range changes - Case 2
Explanation:
Fires are common to taiga biomes. Owing to the fact that the biome in case 1 changed from an agricultural community to a grassland and subsequently to a desert, agricultural productivity will decrease, the local economy will suffer, water availability is decreased and local economy suffers as a consequence of desertification.
On the other hand, in case 2, the diseases vector range as well as species range changes due to the change in the species of foxes from Artic foxes to red foxes that carry rabies. Carbon storage decreases as the taiga biome acts as a carbon sink. The local economy thrives due to timber production.
Lastly, species range changes both in case 1 and case 2 since there is a loss of species. Species range is the area where a particular species can be found during its lifetime. Certainly, the range of area where species are found changed in cases 1 and 2.
The consequences from the given cases are sorted as:
case 1: b. the local economy, c. carbon storage decreases, d. agricultural production decreases, f. disease vector range changes, i. species range changes, g. decreased water availability
Case 2: a. increased risk of wildfires, e. carbon storage increases, f. disease vector range changes, i. species range changes, h. the local economy thrives
Case 1 and 2 both: f. disease vector range changes, i. species range changes.
Consequences by shifting biomes?Case 1:
The shifting of biome from the agricultural community in the United States changes from grassland to desert result in consequences like decrease in the carbon storage and local economy suffers because of reduction in the agricultural production.
Also since the biome changes to the desert, it results in decreased water availability. Also since the biome changes, a species of migrating duck that carries flu goes locally extinct which implies that there will be a change in the range of species as well as the disease vector changes.
Case 2:
Since the biome in Russia changes from Tundra to Taiga now harvesting becomes possible and due to which carbon storage increases which in turn results in the flourishing of the local economy.
As an increase in the forests, there will be an increased risk of wildfires. Since the c foxes go locally extinct and are replaced by red foxes which carry rabies which implies that species range changes and the disease vector range changes.
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What hemisphere is Austin in?
Answer: northern hemisphere
Explanation:
Austin is located at latitude 30.26715 and longitude -97.74306. It is part of America and the northern hemisphere.
What is the speed of bicycle B?
A. 0.2 km/min
B. 0.3 km/min
C. 4 km/min
D. 6 km/min
HELP ME PLZZZZZZ 101010100101101010101010101010
Answer: The answer to your Question is A
Explanation:
What do tropical rainy and temperate marine climates have in common?
O dry winters
O very few trees
O very hot temperatures
O high levels of precipitation
Need help with thisMARKING PEOPLE AS BRAINLIST
Answer:
1. Glycolysis
2. Krebs cycle
3. Electron transport chain
Explanation:
Sorry for being late. Yet I hope it helps
in which part does carbohydrate digestion begin
Answer:
Technically, it begins within the mouth. However, the actual digestion process begins almost halfway through/down the esophagus (throat).
Which statement best describes the purpose of the eye?
A. The eye takes in and responds to stimuli.
B. The eye sends images to the brain.
C. The eye receives and processes visual signals.
D. The eye lets in varying amounts of light.
Answer:
D?
Explanation:
Sorry if im wrong >-<
Dumping raw sewage into a river will reduce the amount of dissolved oxygen in the
water. What effect could dumping raw sewage most likely have on a river ecosystem?
O an increase in cellular respiration due to the rising level of phosphates in the water
O a decrease in water temperature due to the energy transfer from osmosis
O a decrease in aquatic animal populations
O an increase in fish populations
Answer:
The first option "an increase in cellular respiration due to the rising level of phosphates in the water"
Explanation:
hope this helps ;)
Match the term with the definition.
Organism Cells
Tissue Organ
System
1. Similar cells act together to perform of common function.
2. Group of organs cooperate to accomplish common purpose.
3. Tivo or more different tissues arranged to perform a special function.
4. Smallest living unit of structure and function in the body.
5. Denotes a living thing.
Answer:
1.tissue
2.organ system
3.organ
4.cell
5.tissue
Explanation:
1.Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
2.Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
3.Cells grouped together to perform a specialized function are known as a tissue. Tissues arranged together to perform a special function are known as an organ. Organs that together to perform the many functions of the body as a whole are called a system. ... Any abnormal development of tissues or organs.
4.Molecules are the chemical building blocks of all body structures. A cell is the smallest independently functioning unit of a living organism.
5.Tissue. Word used to denote a living thing. Organism. Level made up of a group of tissue working together. Organ.
Organism denotes a living thins. Cells are the smallest living unit of structure and function in the body. Tissue is the similar cells that act together to perform a common function.
What is a cell?A cell is the basic unit of life. It is the structural and functional unit of life in the body. Cells are the smallest unit which are capable of independent existence. A number of similar cells act together to perform a common function is called a tissue.
Organ is made up of two or more different tissues which are arranged to perform a special function. A group of different organs cooperate to accomplish common purpose such as digestive system, excretory system, etc. Organism denotes a living thing which is made up of different organ systems which combine to perform various functions.
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Which step in the formation of calcitriol is regulated by the parathyroid hormone
Answer:
The word that would fill this space would be calcium. Calcitonin lowers it, calcitriol increases it, and parathyroid hormones balance it out.
I hope this helped you! Good luck. :)
You have two substances. Alcohol: density 0.8 g/ml and Glycerin: density
1.4 g/ml.Which substance will float in water?*
1 point
Answer:
The alcohol will float
Explanation:
Alcohol is less dense than water, compared to Glycerin which is more dense than water, (Water's density is 1.0)
Which is true about Embryonic Stem Cells.
Answer:
They can give rise to all cell types in the organism.
Hope this helps
Carlos states that planets that are closer to the sun have a higher surface temperature than those that are further from the sun. Why do you think Carlos is correct or incorrect?
Answer:
Yes Carlos is correct.
Explanation:
The further away an object is from the heat source, the less heat it absorbs.
Answer:
Carlos is correct
Explanation:
He is correct because when the planets are closer to the sun they get a higher tempurture
Which tool is used to test for nitrates?
A. turbidity test
B. pH meter
C. soil testing kit
D.water quality testing kit
The tool which is typically used for testing nitrates is: C. soil testing kit
Nitrogen is a chemical element with the symbol "N" and it has an atomic number (number of protons) of 7.
Basically, nitrogen is found in group (5) of the periodic table and as such it has 5 electrons in its outermost shell.
Oxygen is a chemical element with the symbol "O" and it has an atomic number (number of protons) of 8.
Generally, when nitrogen and oxygen react chemically, they produce a compound known as nitrogen dioxide.
In Chemistry, nitrates are chemical compound that comprises nitrogen and oxygen.
Also, nitrates are used in the production of soil fertilizers in agriculture.
In conclusion, a soil testing kit is mainly used to test the presence of nutrients such as nitrates in soils.
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which is most likely to contain organic compounds?
a. rocks and sand
b. living things
c. air and other gases
d. seawater
Answer:
b. Living things
Explanation:
Every living thing contains organic compounds.
Which best describes the process of peer review?
A. Scientists examine each other's work to make sure it is not biased
or unreliable.
O
B. Scientists prevent other scientists from seeing their experimental
data
C. Scientists allow other people to choose their control groups.
D. Scientists allow other people to draw the conclusions from their
work
Answer:
a
Explanation:
A. Scientists examine each other's work to make sure it is not biased
or unreliable.
Which of the following is most likely associated with population of an organism?
A. A series of severe weather events in the habitat
B. A reduction in the necessary resources available
C. An expansion of adequate living space
D. An increase in animals that hunt the organism
There are twenty amino acids in living organisms. Ten of these are referred to as essential amino acids. Why are they called essential amino acids?
These amino acids are the only ones that are important for the body to function properly.
These amino acids cannot be made by the human body and must be consumed in one’s diet.
These amino acids are the only ones that are made by the human body.
.
2nd one
Explanation:
these amino acids cannot be made by the human body and must be consumed in one's diet
they can be synthesized in sufficient quantities in the body.
Why is freshwater essential to human life?
Answer:
Freshwater is vital for life, supporting ecosystems and human civilizations. We use freshwater in many aspects of daily life including food production, power generation, manufacturing, and sanitation.
A student applies 55 N of force to a box on four types of surfaces. Each surface has a different value for Ffric-
On which surface is the student not able to move the box?
A. A
B. C
C. D
D. B
Answer:
D
Explanation:
The surface is the student not able to move the box is D.
What is force?Force is defined as an outside force that has the potential to alter how a body is moving or resting. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another. The idea of a force encompasses both living and non-living things. The body can change its size, shape, and direction when force is applied. As we discovered in a previous session, forces are significant because they induce modifications to motion.
Net force is defined as all of the forces pulling on a thing combined. The net force, which is a single force, replaces the original forces' influence on the particle's motion. The top 5 words that are similar to "net force" in terms of this word similarity engine are resultant force, force, acceleration, physics, and rotation.
Thus, the surface is the student not able to move the box is D.
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I need Help please?????!!!
Answer:
force
Explanation:
Force is as follows, strength or energy as an attribute of physical action or movement. (ex of physical action. push or pull)
Hope this Helps! :)
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-SGO
what is the structure of the cell wall
How do the Atlantic and Pacific profile differ from one another? Be descriptive of each region of ocean floor?