Answer: 0.5 s
Explanation: speed = wavelength · frequency and period T = 1/ frequency.
Frequency = speed / wavelength = 200 m/s : 100 m = 2 s^-1 and T = 0.5 s
Which of the following statements is true about niches?
I. New species can outcompete native species to fill a niche.
II. Extinction or emigration of a species can leave a niche vacant.
III. Some species occupy niches that no other species can fill.
Answer:
0
Explanation:
Select the correct statement about the three-chambered hearts of amphibians and nonbird reptiles. A scheme of blood circulation of reptiles except for birds. The reptiles have a three-chambered heart that consists of two atria and one ventricle with an incomplete septum. There are two circuits: pulmonary and systemic. In the pulmonary circuit, the blood from the right ventricle is pumped in to lung capillaries and returned to the left atria. In the systemic circuit, the blood is pumped from the left ventricle to the systemic capillaries via the left systemic aorta and is then returned to the right atria. There is also one vessel going from the right ventricle to the aorta right before it branches to smaller arteries. This vessel carries mixed blood. All blood on the right side of the circuits is venous and all blood on the left side is arterial. Select the correct statement about the three-chambered hearts of amphibians and nonbird reptiles. The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart. The three-chambered heart is inferior to the four-chambered hearts of birds and mammals, limiting the evolutionary success of amphibians and nonbird reptiles. Pulmonary and systemic blood fully mixes in the ventricle of a three-chambered heart.
Answer:
The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.
Explanation:
In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.
Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.
which of the following element is not present in proteins
Answer:
Protein: a compound made of amino acids. Each amino acid is made of carbon, hydrogen, oxygen, and nitrogen. Most proteins also include sulfur.
Which means the only choice left is helium
i hope this is the answer you are looking for
A complex multicellular organism has different levels of organization. What is the order of the levels from least complex to most complex?
1organ system, organ, tissue, cell
2cell, tissue, organ, organ system
3cell, organ system, organ, tissue
4organ, tissue, cell, organ system
Answer:
A. tissue, cell, organ, organ system, organism
Explanation:
The order of the levels from least complex to most complex are 3cell, organ system, organ, tissue.
What is complex multicellular?The term multicellular organism is known to be a type of an organism that is made up of multiple cell.
These organisms are known to be complex due to the fact that they have different kinds of differentiated cells such as 3cell, organ system, organ, tissue.
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What fictional planet does the writer compare Kepler-16b to?
Pluto
Lyra
Tatooine
Cygnus
Answer:
Tatooine
Hope this helps!
How does competition limit the amount of individuals in populations?
Answer:
Due to competition, many animals starve, many become prey, etc.
Explanation:
5. Predict long-term changes to the surface landscape of the area if too much water is drawn from the ground and the water table drops further.
what makes one organism different from any other organism
Answer:
Their DNA.
Explanation:
Our DNA is the blueprint of how we are made. This separates us from other organisms.
Answer:
because of DNA and non similarities inherited by the parent
¿De qué manera participa el sistema glandular en la regulación del equilibrio del agua y las sales minerales en el organismo?
8. Analysis of a basalt rock sample shows that 12.5% of its radioactive potassium-40 remain undecayed.
How old is the basalt?
What is the role of bitechnology in the environment
Answer:
i already answer but here you go again
it addresses environmental problems, such as the removal of pollution, renewable energy generation or biomass production, by exploiting biological processes.
Explanation:
The drawing below was sketched by a student who was observing cells under a microscope.
In what kingdom does the above cell likely belong?
Answer:
protista
Explanation:
It just looks like a protista cell, I think
Which direction does Xylem flow? Phloem?
Answer:
The movement of Xylem is unidirectional and phloem is bidirectional
Explanation:
The tension created by transpiration “pulls” water in the plant xylem, drawing the water upward in much the same way that you draw water upward when you suck on a straw.
Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure. ... Hence the water flows from regions of high turgor pressure to low turgor pressure and the direction can be upwards or downwards from the leaves based on the gradient.
Does anyone know why Mt. Vesuvius erupted? Was it natural or human caused?
Answer:
Explanation:
Natural
Talitha is performing an experiment on how plant cells maintain homeostasis. She places a plant with wrinkled and wilted leaves in a beaker of water. Then, she hears a fire alarm and heads outside. When Talitha gets back to the classroom, leaves of the plant look less wrinkled and wilted. Which statement describes what happened?
Group of answer choices
A:The plant cells let out more oxygen into the air to maintain homeostasis.
b:The plant cells took in more oxygen from the air to maintain homeostasis.
c:The plant cells let out more water to maintain homeostasis.
d:The plant cells took in more water to maintain homeostasis
The population of peppered moths have changed over time. The population has changed from primarily light colored to dark colored moths. This is an example of...
a
Mimicry
b
Natural Selection
c
Selective Breeding
d
Camouflage
Answer: b
Explanation:
natural selection occurs when something adapted to the environment to give them an advantage or to survive
Who formulated the Universal law of Gravitation (G)
Answer: Isaac Newton
Explanation: Sir Isaac Newton put forward the universal law of gravitation in 1687 and used it to explain the observed motions of the planets and moons
3. In the image, which letter represents the enzyme?
a. Letter A
b. Letter B
c. Letter C
d. Letter D
Answer: The answer is C
Explanation:
The correct option is, (c) Letter C.
What is the enzyme?Proteins called enzymes assist our bodies' chemical reactions move forward more quickly. For several processes, including digestion and liver function, enzymes are crucial. Health issues might result from having too much or too little of a specific enzyme. Healthcare professionals can also use the enzymes in our blood to look for injuries and illnesses.How do you classify enzymes?According to the sort of process they catalyze, enzymes are divided into six categories:
Oxidoreductases. Transferases.Hydrolases.Lyases.Ligases.Isomerases.What are the 7 enzymes?Depending on the type of reaction they catalyze, enzymes can be divided into seven different types. These groups include hydrolases, lyases, isomerases, ligases, translocases, oxidoreductases, transferases, and hydrolases.What is enzyme structure?Proteins called enzymes are made up of amino acids connected by one or more polypeptide chains. The fundamental structure of a polypeptide chain refers to this arrangement of amino acids. This in turn dictates the enzyme's three-dimensional structure, including the active site's shape.Learn more about enzyme here:
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i need it now plz n ty
Which of the following best describes continental drift?
A. There is no evidence that the plates move
B. The plates move about 1 inch per year.
C. The plates move about 30 kilometers per year.
D. It has never happened.
A student remarks that it is a good thing that humans discovered how to use industrial processes to fix nitrogen because this ensures that the nitrogen cycle can remain intact if nitrogen-fixing bacteria ever go extinct. Evaluate the accuracy of this statement. A. The statement is accurate because humans are able to fix nitrogen on a large scale that rivals the rate of the process carried out by bacteria. B. The statement is inaccurate because the nitrogen cycle does not depend on nitrogen-fixing bacteria, and their loss would not cause a problem. C. The statement is inaccurate because the product of nitrogen fixation through industrial processes does not have the same biological properties as the product of nitrogen fixation by bacteria. D. The statement is inaccurate because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now.
Answer:
D. The statement is inaccurate because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now.
Explanation:
Nitrogen fixing bacteria has the responsibility in nature to trap and fix atmospheric nitrogen in ecosystems. They are very important components of the nitrogen cycle and play an important role in maintaining the balance of nutrients in nature.
If humans discover industrial processes to fix nitrogen, the process will be unsustainable in the long run if nitrogen-fixing bacteria ever go extinct because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now across several ecosystems all over the world.
ere are 5 sacral vertebrae that are fused into ____________ sacrum.There are ____________ cervical vertebrae, some of them containing a transverse foramen.There are ____________ thoracic vertebrae, most of them with a long spinous process.The vertebral column is composed of ____________ vertebrae distributed into 5 regions.There are ____________ to 5 bones in the coccyx, with variability in the fusion.There are ____________ lumbar vertebrae, which have large verte
Answer:
There are 5 sacral vertebrae that are fused into one sacrum. There are seven cervical vertebrae, some of them containing a transverse foramen. There are twelve thoracic vertebrae, most of them with a long spinous process. The vertebral column is composed of thirty-three vertebrae distributed into 5 regions. There are three to 5 bones in the coccyx, with variability in the fusion. There are five lumbar vertebrae, which have large vertebral bodies.
Explanation:
The vertebral column has 33 vertebras and five sections. They are the cervical spine with seven vertebrae, the thoracic spine with twelve vertebrae, the lumbar spine with five vertebrae, the sacrum with five fused vertebrae, and lastly, the coccyx with three to five vertebrae. The vertebrae in each section have different characteristics. For example, the length of the spinous process changes becoming longer as we descend in the cervical and the thoracic spine, or the body of the vertebrae has different shapes in each section, or the presence of the transverse foramen in the cervical spine, which allow the passage of a nerve plexus, an artery, and a vein. Each section, with its characteristics, aligns to form the vertebrae column containing and protecting the spinal cord.
identify the function of the vacuole. what is the funtion of the vacuole. please explain! i really appreciate it
Answer:
In animal cells: vacuoles are generally used for storage and can have nutrients, water or waste
In plant cells: vacuoles help store water and push against cell wall and keeps the plant rigid.
Explanation:
ASAP PLEASE HELP!!!!
When rock in the interior of the planet is heated to high enough temperatures, what occurs? Select the best answer from the choices below.
a it gets hotter and sinks into a trench
b the rock melts to create magma
c it forms new mountains underwater
d it causes glaciers to melt
Answer:
B !
Explanation:
I'm basing this off of a lesson I took two years ago, but the answer is B! The interior of Earth is rumored to be filled with magma as a way to have convection currents in itself, and to move the tectonic plates/ create the tectonic plates, if I remember correctly.
If i'm wrong I can still prove why it's not the other choices.
It's not A becuase when rock gets hotter, it rises, and when it cools, it sinks.
it's not C becuase it said "interior of the planet", which it may be referencing somewhere having to do to below the crust. as well, you need to cool rocks as to make it solid, not heated up rocks. but even then, mountains are made by the plates.
it's not D becuase glaciers are affected by climate change and occurrences the biosphere, not the interior of the planet.
Help me please! Help
Answer:
football field
Explanation:
a. 21. Angiosperms produce flowers, while gymnosperms do not. Which is a property of the flowers of angiosperms that is not shared by the reproductive structures of gymnosperms?
A. flower can produce many seeds at the same time.
b. The same plant can produce many flowers.
C. Flowers can be pollinated without the involvement of animals.
d. Flowers produce seeds that are encased in protective fruits
Answer:
Its not a flower can produce many seeds at the same time
Explanation:
D. Flowers produce seeds that are encased in protective fruits is a property of the flowers of angiosperms that is not shared by the reproductive structures of gymnosperms.
What are gymnosperms?Gymnosperms are a group of seed-bearing plants that produce seeds that are not enclosed within a fruit. They are found in a wide range of habitats, from deserts to mountainous regions, and include many well-known species such as pine, spruce, and fir trees.
Gymnosperms are an ancient group of plants that have been around for over 300 million years, and they play an important role in many ecosystems by providing habitat, food, and other resources for wildlife and humans.
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Which graph best represents directional selection?
Answer:
Graph Bedge⬇️
Which of the following is NOT used as evidence for evolution?
A
Embryology
B
Allele Frequency
C
Comparative Anatomy
D
DNA Similarities/Differences
The accessory organs assist the digestive organs in the chemical digestion of food. An injury to which organ can hamper the digestion of fats, carbohydrates, and proteins?
Answer:
Pancreas
Explanation:
The Pancreas produces enzymes that aid the digestion of fats, carbohydrates, and proteins.
Answer:
The answer is Pancreas
Explanation:
It is the banana shaped organ, hope this helps!
A) If a female spinach plant with green (GG) leaves is crossed (pollination and fertilization occur) with a male spinach plant with purple (gg) leaves. What are the genotypes of the offspring and what traits will they express including the probability or ratio.
Answer:
The genotype Ratio is 1. All are Gg.
The phenotype is all Green spinach
Explanation:
Punnett Square:
G G
_________________
g | Gg | Gg |
|________|________ |
g | Gg | Gg |
|________|________ |
The genotype Ratio is 1. All are Gg.
The phenotype is all Green spinach