Some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as: vestigial structures.
Vestigial structures are organic structures that do not appear to fulfill any important biological function in the organism that possesses them.
These structures are preserved as an inheritance of the evolutionary process, because at some point in the history of evolution an ancestor of the current species had that structure.These types of structures, which can be bones, organs, structures in the skin or any other part of the body, no longer offer any meaningful function for the body.The presence of vestigial structures in animals is considered proof that evolution and natural selection exists.
Therefore, we can conclude that some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as vestigial structures.
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spermiogenesis begins with a ________ and ends with a ________.
Answer:
Answer:
germ cell and four gametes
Explanation:
Spermiogenesis begins with a germ cell and ends with four gametes.
1. Which of the following describes a heterotroph?
A.Heterotrophs conduct photosynthesis.
B.Heterotrophs cannot create their own food.
C.Heterotrophs can create their own food.
D.Heterotrophs get their energy directly from the sun.
Answer:
B. Heterotrophs cannot create their own food
Explanation:
Autotrophs, on the other hand, can.
Genes located near one another on the same chromosome are often inherited together. These are called ________.
Answer: Linked Genes
Explanation:
Complete this sentence. The increased ________ in ocean waters has decreased its pH, making it more acidic.
nitrogen
carbon
salt
heat
Answer:
Carbon?
Explanation:
I remember that carbon can be toxic if it's increased
Answer:
carbon
Explanation:
(Branliest) Please give me the answer to these
Answer:
Explanation:
There are over 1300 imperilled species in the United States. 33.4% has been caused by introduced species or more so invasive species
The invasive or introduced species in the United States has seen an economic impact since the damage can be seen in both animals and plants. Now with an invasive species brought about, the naturally occurring species are left fighting for a spot in the habitat and lose in most cases. So economically, the United States has to spend money to get rid of the invasive species
Some of the invasive species have been known to live all year long, and so during the winter seasons, they act as food sources to birds and other animals.
why shouldnt you move the objective lense towards the stage when focusing
what is the main difference between a biome and an ecosystem
An ecosystem is quite smaller than a biome and exists within a biome.
A biome refers to a large habitat ocupied by assorted fauna and flora. Biomes are classified based on abiotic conditions such as temperature, soil types, rainfall etc. An ecosystem is a self supporting unit in which materials and energy are exchanged within the system.
The difference between a biome and an ecosystem is that a biome is a collection of different ecosystems that are found within a habitat while an ecosystem is composed of living and nonliving factors. An ecosystem is quite smaller than a biome and exists within a biome.
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26. predict the elect of the loss of forests on cellular respiration in other organisms
What are two types of evidence that support the hypothesis that earth and the rest of the solar system was formed by a condensing nebula
Comets, Asteroids and metoeorites support the hypothesis that earth and the rest of the solar system was formed by a condensing nebula.
What are the functions of asteroids?An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere.
They probably consist of clay and silicate rocks, and are dark in appearance. They are among the most ancient objects in the solar system. The S-types ("stony") are made up of silicate materials and nickel-iron. The M-types are metallic (nickel-iron).
Almost all of the asteroids in our solar system are orbiting in a broad band 19,400,000 miles wide between Jupiter and Mars. The asteroids are orbiting the Sun, each one traveling around the Sun fast enough for the orbits not to degrade.
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How does humus help in plant growth?
Explanation:
Humus gives the soil the ability to absorb and retain moisture. Such soils do not dry out and require significantly less irrigation. Humus provides a reservoir for the plant nutrients available in the soil for balanced plant growth.
Answer:
Humus gives the soil the ability to absorb and retain moisture. Such soils do not dry out and require significantly less irrigation. Humus provides a reservoir for the plant nutrients available in the soil for balanced plant growth.
How would air pollution affect the lives and/or livelihoods of those in the open markets of India?
Answer: It can make them sick and cause sickness or death and can make their businesses lose money.
Explanation:
The health effects of air pollution are serious – one third of deaths from stroke, lung cancer and heart disease are due to air pollution. ... Microscopic pollutants in the air can slip past our body's defences, penetrating deep into our respiratory and circulatory system, damaging our lungs, heart and brain.
What happens to the states of matter when the temperature changes
They may either release heat or gain heat. With a temperature increase, the kinetic energy increases and the state of matter will increase (example, ice to water aka solid to liquid)
If the temperature decreases, then the kinetic energy decreases and the state of matter will decrease (example, water vapor to water aka gas to liquid)
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How can the rate of photosynthesis be measured using products or reactants.
Answer:
Theory of Measurements:
Leaf photosynthetic rate is measured by enclosing a leaf in a closed, transparent chamber and measuring the decrease in carbon dioxide concentration as a function of time.
If the plant absorbs 50 kcals of energy units, how much energy will the mushroom get from hawk that ate mouse that ate plants.
How long can the brain survive without oxygen.
Answer:
After five to ten minutes of not breathing, you are likely to develop serious and possibly irreversible brain damage. The one exception is when a younger person stops breathing and also becomes very cold at the same time.
Explanation:
gas exchange occurs between the tissue cells and the blood in the
Answer:
alveoli
Gas Exchange with Tissues
Gas exchange occurs in the alveoli so that oxygen is loaded into the bloodstream and carbon dioxide is unloaded from the bloodstream. Afterwards, oxygen is brought to the left side of the heart via the pulmonary vein, which pumps it into systemic circulation.
Explanation:
hope this helps
the two organs that play an important role in maintaining acid-base balance are the
Answer:
the lungs and kidneys.
Explanation:
Many fishes and other organisms that live in the deep ocean produce light. What are two ways in which this light might be useful?
Answer:
Explanation:
Bioluminescence is used by living things to hunt prey, defend against predators, find mates, and execute other vital activities. Some species luminesce to confuse attackers. Many species of squid, for instance, flash to startle predators, such as fish.
Alzheimer’s is a bone disease in which the bones become less dense.
Please select the best answer from the choices provided
T
F
False
Alzheimer's disease is a brain disorder that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks.
Coughing, oils in skin, cilia that
sweep out invaders, saliva
chemicals, and stomach acid are
all a part of which type of immune
system defense?
Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation: brainlieast...?
Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation:
i hope that helps. have a great day!! :)
What is one defining feature of a prokaryotic cell?
have a cell wall outside plasma membrane
cytoplasm surrounds organelles
organelles are not membrane-bound
membrane-bound organelles
Answer:
Here.
Explanation:
Cytoplasm Surrounds Organelles
NO Links!!, Please HURRY How does the frequency of a wave relate to the wave's wavelength?
O The higher the frequency, the shorter the wavelength. This is because they have a direct relationship.
O The higher the frequency, the longer the wavelength. This is because they have a direct relationship.
O The higher the frequency, the shorter the wavelength. This is because they have an inverse relationship.
O The higher the frequency, the longer the wavelength. This is because they have an inverse relationship.
Answer:
Explanation:
What questions should you ask when analyzing how a character develops a theme? Check all that apply.
How does the character react to conflict?
How is the character changed by conflict?
When does the climax occur in a play?
Is the theme relatable to people around the world?
What lessons does the character learn based on the resolution of the conflict?
during carbohydrate catabolism, more atp molecules are produced during
Answer: Glycolysis
Explanation:
It changed glucose to acid.
Plants undergo both photosynthesis and cellular respiration. Which statement correctly compares photosynthesis and respiration
Answer:
what where compare please put a picture to yur question next time so we can answer it properly
Explanation:
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Which of these is not a feature of
prokaryotic cells?
A. ribosome
B. cytoplasm
C. cell membrane
D. nucleus
Answer:
D. Nucleus
Explanation:
Are dams density-dependent or density-independent limiting factors?
Density-dependent
Density-independent
Answer:
Density-Independent
Explanation:
I hope this helped you! Let me know if you have any other questions.
Answer: Density-Independent
Explanation:
Choose all that apply. Which of the following is true in a comparison of your skin cells to your kidney cells?
1) conduct translation differently
2) contain different DNA
3) contain different chromosome
4) transcribe many different genes
5) conduct replication differently
6) have different transcription factors
7) contain different genes
Given our understanding of the mechanisms behind genetic expression, we can confirm that when comparing skin cells to kidney cells, the only correct option is option 4 which states that the cells "transcribe many different genes".
The human genome encodes for every gene in the human body. This genome sequence is stored in the chromosomes of cells. These chromosomes are identical for every single cell in the human body. Therefore, every cell contains the same DNA, genes, and transcription factors in its chromosomes.
What allows each cell type in the human body the ability to differentiate from one another and complete vastly different functions is the way in which these genes are expressed. Though every cell contains the entire genetic code, only some genes for each cell are transcribed, which results in a different combination of proteins in each cell and leads to the difference between skin and kidney cells (as just one of many examples).
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________ is the passing of traits from generation to generation while _________ is the scientific study of traits being passed from generation to generation.
Answer:
Heredity,Genetics
Explanation:
Heredity is the passing of traits from generation to generation while Genetics is the scientific study of traits being passed from generation to generation.
Traits are the defining characteristics that are passed from generation to generation, and genetics is a branch of science to study heredity.
What is genetics?Genetics is the branch of science to study heredity and evolution, how genes originate and what changes occur over time.
Genes are segments of DNA upon chromosome code for protein, in the genetics gene is the major area of study. How a gene can be transferred from parents to a daughter and lead to heredity can be studied.
Heredity depends on the gene responsible for a particular trait and character, during evolution, there would be changes occur at the genetic level which leads to variation among species.
Therefore heredity is to pass traits, and the scientific study of it is genetics.
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how does food web relate to food chain
If you take a freshwater animal and transfer it to seawater for 60 days, what do you expect to see when you perform immunocytochemistry
Answer:
Explanation:
You could expect the to die because fresh water animals need fresh water to survive and seawater animals need sea water to surrive