Answer:
Pallor is caused by vasoconstriction of the dermal blood vessels
Explanation:
Pallor is paleness or wanness usually caused by vasoconstriction of the dermal blood vessels.
In other words. A deficiency in the color of the face.
which statement describes a response to external stimuli
Answer:
A rabbit runs away from a fox that is chasing it is external stimuli
Thirst and hunger are internal stimulation caused by hypothalamus of human brain
Yawning is a process occuring due to low oxygen levels in the blood which is also internal factor
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Thank You!
Answered by: ms115
Why does a soild changes to liquid when heat is added
Answer:
Explanation:
When a solid is heated the particles started to vibrate faster and when it vibrate faster the outer layer breaks down and change into liquid.So,a solid change into liquid when heat is added.
Hope it helps you:)
19. A strategy to reduce resource use through decreased demand and increased efficiency is
conservation
recycling
source reduction
biodiversity
Answer: A. Conservation
Which do DNA and RNA have in common?
a. Both contain phosphate groups.
b. Both contain ribose molecules.
c. Both contain uracil.
d. Both are double stranded.
Answer:
[tex]a. \: Both \: contain \: \\ phosphate \: groups.[/tex]
Hope it helpfulPls answer this asap I need it pla help meh
Answer:
1) C
2) C
3) A
4) B
5) A
Explanation:
Hope it helps
At one beach, high tide occurs at 8 a.m. When will the next high tide most likely occur?
Answer:
It will most likely occur at 8pm
Explanation: I hope you have/had an amazing day today<3
Answer:
8pm
Explanation:
please help!!
…………………….
Answer:
1) It eliminates extreme traits, 2) represents a population where most individuals are above average
Explanation:
Disruptive selection is DISRUPTIVE to an ecosystem, making the ecosystem scarcer of extreme traits. Also, a BELL-shaped pattern, where a line slopes upward and then back down, would represent a population that is mostly above average, since the climax is a maximum instead of a minimum. Hope that helps :)
what are the 3 types of symbiosis?
Give examples.
Answer:
Types of Symbiosismutualism - a mutually beneficial symbiotic relationship.commensalism - a one-sided symbiotic relationship.parasitism - one species lives on, in or with a host species.competition - relationship in which organisms compete for resources.
Answer=
Mutualism, commensalism, and parasitism are the three forms of symbiosis. Symbiotic connections are classified into one of these categories based on the nature of the interaction between organisms. Mutualism is a positive connection in which both species gain from one another.
examples=
-For food and marine resources, sea sponges and coral compete.
-Small animals and jackals share the same water supply.
-In their natural settings, wolves and bears both pursue the same prey.
5. Which of the following best describes the effect of coral bleaching on corals?
A. As temperatures increase, corals lose symbiotic algae, which provide most of their habitat
B. As temperatures decrease, corals lose their symbiotic algae, which provide most of their energy.
C. As temperatures increase, corals lose their symbiotic algae, which provide most of their energy.
D. As temperatures increase, corals gain symbiotic algae, which hinder their ability to conduct photosynthesis.
As temperatures increase, corals lose their symbiotic algae, which provide most of their energy. This is the best description to the effect of coral bleaching on corals. Thus, the correct option is C.
What are coral reefs?A coral reef is an underwater ecosystem which is characterized by the reef-building corals. Bleached corals are found in the underwater ecosystem which most likely show reduced growth rates, decreased reproductive capacity, increased susceptibility to diseases, and elevated mortality rates than the normal coral reefs. Changes in the coral community composition can occur when the more susceptible species are killed by bleaching events in the ecosystem.
When the conditions such as the temperature change, corals are expelled out the symbiotic algae which is living in their tissues, it is responsible for their colour. A spike of the temperature to 1 to 2°C in the oceans sustained over several weeks which can lead to bleaching, that turns corals white. If the corals are bleached for prolonged periods of time, they eventually die.
Therefore, the correct option is C.
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What are two contributing factors to evolution?
describe a mercurial clinical thermometer.
Answer:
➢ In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
[tex]Into \: your Arms[/tex]
#CarryOnLearning
Diploid plants have two sets of chromosomes. Polyploid plants have more than two sets of chromosomes, are often larger, and have more desirable characteristics. To create polyploid plants, plant breeders can treat diploid plants with a chemical that prevents the separation of sister chromatids during mitosis. Resulting cells that have any partial chromosome sets, even if in addition to one or more complete chromosome sets, typically do not survive this process.
If a diploid plant cell treated with such a chemical goes through a single round of mitosis, what is the MOST LIKELY genetic composition of the resulting cells that survive?
Answer:Both haploid and diploid cells can undergo mitosis. When a haploid cell undergoes mitosis, it produces two genetically identical haploid daughter cells; when a diploid cell undergoes mitosis, it produces two genetically identical diploid daughter cells.
Answer:
its b
Explanation:
To produce a tetraploid plant, the alkaloid colchicine is applied to the terminal bud of a branch. All the cells in the developing branch will be tetraploid (4n) with four sets of chromosomes. This includes cells of the stem, leaves, flowers and fruit. Gametes (egg and sperm) produced by a flower on this tetraploid branch will be diploid (2n) with two sets of chromosomes. A flower on the normal diploid (2n) branch will produce haploid (n) gametes containing one set of chromosomes.
Stages of mitosis in the formation of tetraploid cells. The original mother cell is diploid (2n). During anaphase the chromatids separate and move to opposite ends of the cell. Colchicine causes the dissolution (depolymerization) of protein microtubules which make up the mitotic spindle in dividing cells. This leaves the cell with twice as many single chromosomes (four sets rather than two). When this cell divides, each of the two daughter cells will have fours sets of chromosomes, a total of eight chomosomes per cell. [Note: Spindle poisons such as colchicine are used to prevent tumor cells from dividing in certain chemotherapy treatments.]
The botanical term parthenocarpy refers to the development of the ovary of a flower into a fruit without fertilization. [The biological term parthenogenesis refers to the development of an egg without fertilization.] Fruits that develop parthenocarpically are typically seedless. Some seedless fruits come from sterile triploid plants, with three sets of chromosomes rather than two. The triploid seeds are obtained by crossing a fertile tetraploid (4n) plant with a diploid (2n) plant. When you buy seedless watermelon seeds, you get two kinds of seeds, one for the fertile diploid plant and one for the sterile triploid. The triploid seeds are larger, and both types of seeds are planted in the same vicinity. Male flowers of the diploid plant provide the pollen which pollinates (but does not fertilize) the sterile triploid plant. The act of pollination induces fruit development without fertilization, thus the triploid watermelon fruits develop parthenocarpically and are seedless. Most bananas purchased at your local supermarket came from sterile triploid hybrids. The fruits developed parthenocarpically and are seedless.
Which choice identifies categories of physical characteristics?
measurable qualities only
anything observable or measurable
actions only
observable qualities only
Answer:
anything observable or measurable
anything observable or measurable
Approximately how many million
years ago (mya) were all of Africa and
South America inferred to be located
south of the equator
Answer:
I got you
Explanation: 359 mya million
hope this helps
Where do babies come from?
Answer:
Tbh they come from the Male sperm and the Female egg. Once the sperm fertilizes the egg then you have a baby! That's the short and simplified answer
Explanation:
disadvantages of binomial nomenclature
Answer:
the disadvantage of binominal nomenclature
Explanation:
Some of the main drawbacks of binomial nomenclature are: If two or more names are actually in use in compliance with the priority rule, the appropriate name will be used first and the other names will end up being synonyms because authenticity is synonymous with the senior.
Please help with this
Answer:
I think its AIDS.
What are some advantages and disadvantages of being a social organism (include at least 4)
I need help with this question please
Answer:
(b)
Explanation:
when it is come together the sperm and the egg
what does post school destination mean?
Post-school destination literally means your destination after schooling.
Post-school destinationPost- means after. Thus, post-school means 'after school'.
Post-school destinations, therefore, refer to where you are heading once you are done with school.
It is a phrase that is often used to describe the transition from one period of schooling to another or a period of schooling to taking up jobs or careers.
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What characteristic do biologists use to classify organism into kingdoms
Answer:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.
True or false-A nerve tissue consists of up nerve and muscle cells
Answer:
False
Explanation:
it consists of neuron and neuroglia
Answer:
False
Explanation:
It consists of neurons and glial cells
Identify three vocation that use
of Solid
Examples of solids are common table salt, table sugar, water ice, frozen carbon dioxide (dry ice), glass, rock, most metals, and wood. When a solid is heated, the atoms or molecules gain kinetic energy .
a time line of the changes that have occurred in modeling the atomic structure since the 1800s
The rate of at which producers create
organic matter is called what?
A. primary productivity
B. primary succession
C. biomass index
Answer:
A. Primary productivity
which structures are adapted for supporting a plant?
a) Phloem tissues
b) Root hair cells
c) Stomata
d) Xylem vessels
Answer:
Stomata as without the gas not leaving the plant the will eventually die
Explain why controls are vital to scientific investigations?
because it allows the experiment to minimize the changes in all other variables except the one being tested
Which of the following is NOT true about the scientific method?
O A. It does not apply to problems encountered in everyday life
OB. It is a framework to consider opinions
OC. It begins with observations
OD. It is a general way of organizing an investigation
Answer: The answer is c
Explanation:
It always starts with observation sot find out what is going on in the lab.
what is the formula for iron(ii) cyanide
here's the answer to your question hope it helps you
formula: Fe (C N) 2
How long can it take for primary forest succession to reach the climax, or old-growth, forest?
5 to 20 years
70 to 100 years
1 to 3 years
250 to 600 years
It take over 600 years for primary forest succession to reach the climax, or old-growth, forest. i.e,option D
What is primary succession?Succession on land that did not previously have plants, such as soil exposed as a glacier retreats or a new sand bar in a river is called primary succession.
It takes over 600 years to primary forest succession to reach the climax. it includes breakdown of the rocks into soil and plants help in survival of different animal and progress from primary succession to the climax community.
Hence, option 'D' is correct.
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