Answer:
Movement of particles from a region of low concentration to a region of high concentration against the concentration gradient that requires energy.
In the early days of life on Earth, plants were exposed to extremely high doses of ultraviolet radiation, Constant UV exposure
resulted in some land plants developing narrow leaves with thick, waxy cuticles. Over many, many generations, these narrow
leaves evolved into needles.
Relate the development of plant needles to the occurrence of mutations,
A)
Plant needles adaptations for survival that some plants developed due to
high temperatures on Earth
B)
Plant needles are the result of leaf cell mutations that made some leaves
thick and waxy, while other leaves did not change,
Plant needles are the result of neutral mutations to leaf tissue that would
neither help nor harm the plants living in such a harsh environment.
D)
Plant needles were a beneficial mutation that increased survival of certain
plants that reproduced and passed the mutated gene to offspring,
Answer:
B I think.
Explanation:
What is the only thing that creates organisms better adapted to their environment?
A. Natural Selection
B. Artificial Selection
C. Small population size
D. Gene Flow
Answer:
A. Natural Selection
Explanation:
Natural Selection is the only thing that creates organisms better adapted to their environment.
It is based on the Charles Darwin's theory of evolution by natural selection.
Answer:
A. Natural Selection
Explanation:
Natural Selection is the only process that creates organisms better adapted to their local environment/ increases fitness.
List three sources of freshwater.
Rain, River, ocean
Answer:
Sources of freshwater: rivers, lakes, reservoirs, and creeks and streams.
Which of the following can cause mutations?
A. All of the above
B. Radiation
C. Chemicals
D. Errors during DNA Replication
[tex]\huge\colorbox{purple}A\colorbox{blue}n\colorbox{purple}s\colorbox{blue}w\colorbox{purple}e\colorbox{blue}r [/tex]
just correct me if I'm wrong ✨
Don't bash me please :(
__________________________________
D. Errors During DNA Replication ✨
[tex]\color{Violet}\rm{☘︎Hopeithelps!}[/tex]
Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.[tex]\color{gold}{✨•MissyyZackiee•✨} [/tex]__________________________________
“I ask that you’ll have the power to grasp love’s width and length, height and depth, together with all believers. I ask that you’ll know the love of Christ that is beyond knowledge so that you will be filled entirely with the fullness of God.” — Ephesians 3:18-19 ❤__________________________________
The digestive system and the excretory system both excrete waste.
Answer:
The answer is
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
hope it will help you
Answer:
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
Explanation:
I Know I am in the future
Why are humans successful in terms of evolution
Our atmosphere acts like a blanket trapping heat and keeping Earth at a habitable temperature, it’s this retaining of heat that is referred to as the Greenhouse Effect. The greenhouse effect is caused by greenhouse gases that trap heat from the sun, the more greenhouse gases there are the more heat is retained
HOW IT WORKS
The heat from the sun (solar radiation) has a very short wavelength and this can pass easily through the layer of greenhouse gases. This wavelength is called Ultraviolet radiation. As the UV rays strike the Earth, the Earth redirects the rays back into the atmosphere. We feel this as heat. The heat from the earth (terrestrial radiation) has a longer wavelength (infrared) some of this becomes trapped by the layer of greenhouse gases.
GREENHOUSE GASES
Water vapor (H20) is the most prevalent greenhouse gas and occurs naturally. Some greenhouse gases are both natural and man-made including carbon dioxide (CO2) & methane (CH4).
Describe the size of insolation when it strikes the Earth.
What would happen if there were no greenhouse gases to trap heat?
Answer:
y
Explanation:
y
which feature of stem cells enable them to replace cells in tissues such as skin?
The feature of stem cell which enable them to replace cell in tissues are that they can divide indefinitely to generate new cells and they can convert into the different types of cells that make up the body as they divide.
What is a stem cell ?A stem cell is a cell that has the unique capacity to grow into different types of cells in the body.
They may be utilised in the future to replace cells and tissues that have been damaged or destroyed owing to illness.
Stem cells are classified into three types which are Embryonic stem cells, Adult stem cells, Induced pluripotent stem cells.
Embryonic stem cells provide new cells to an embryo as it grows and develops into a newborn.
Adult stem cells generate new cells as an organism matures and replace damaged ones.
Induced stem cells are stem cells created in the laboratory by scientists.
Learn more about Stem Cell here:
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Why is the giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment ?
O A. Giant iguanas live on the largest island in the Galapagos.
OB. Giant iguanas live on the smallest island in the Galapagos.
O C. Giant iguanas help each other survive.
OD. Giant iguanas are larger than other iguana species.
Answer:
A
Explanation:
They live on larger islands so they need to evolve to survive better on them.
The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.
What are the benefits of flattened tails?The benefits of flattened tails are that or the difference in the tail shape is because Flattened tails are better for swimming than rounded tails. This is due to the difference in habitats of the marine and inland iguanas.
By natural selection, the nature of the species gradually changes to became adapted to the niche.This is due to natural selection.The marine iguanas of the Galapagos Islands feed on seaweed and algae. Marine iguanas have flattened tails while other species of iguanas that live inland on the Galapagos and on the South American mainland have rounded tails.
Therefore, The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.
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During action potential which of these statement is true?
a) Na+ goes outside the cell membrane
b) there is repolarization of cell membrane
c) there is depolarization of cell membrane
d) non of above
Describe how an ecosystem with high biodiversity might look compared to an ecosystem with low biodiversity.
Answer:
High biodiversity, with many species present, is good. It usually means that an ecosystem is healthy and relatively undisturbed by humans. Low biodiversity is characteristic of an unhealthy or degraded environment. A mown lawn in a city park is an example of an ecosystem with low biodiversity.
1. Stern cells are different from other cells, as they are not specialized and can reproduce other unspecialized cells. There has been great controversy over the use of stem cells in the United States, especially when they are taken from fetal tissue. What are some possible benefits to humans of using stem cells?
plz hellllp
Answer:
Stem cell benefits:
Can repair limbs such as Arms cut off etc.
Can Repair cells and keep people from ageing
Can reduce the effect on diseases
Test new drugs for safety and how effective they are
Make people live longer and healthier lives
Explanation:
Humans aren't aware on how to harvest stem cells effectively in a way they work on humans tot heir full potential but the reasons I listed above are only the tip of the iceberg when it comes to what we can do with these.
How red blood cell adapt to function
Answer:
Red blood cells haveadaptations that make them suitable for this: they contain haemoglobin - ared protein that combines with oxygen. they have no nucleus so they can contain more haemoglobin. they are small and flexible so that they can fit through narrow blood vessels.
Explanation:
Hope It Helps
how old is president Cyril Ramaphosa??
Gene expression establishes that genes will be turned on to build a protein.
A. TRUE
B. FALSE
Answer:
A. TRUE
Explanation:
Gene expression establishes that genes will be turned on to build a protein.
which part of a nucleotide makes it possible for a nucleic acid to be a unique code
Answer:
RNA nucleotides may also bear adenine , guanine and cytosine bases, but instead of thymine they have another pyrimidine base called uracil (U) . as shown in the figure above, each base has a unique structures with its own set of functional groups attracted to the ring structure...HELP! What evidence indicates that many psychological disorders, such as schizophrenia and developmental
disorders, are biologically and not environmentally based?
Answer:
Schizophrenia and developmental disorders are traced genetically, and the gene will be found in the biological parents of the person with either schizophrenia or developmental disorders.
Explanation:
Although Schizophrenia can be triggered by environmental factors, or the 'nurture' of childhood development, a person who is not predisposed genetically to schizophrenia will not get the psychological disorder. The same is to be said about developmental disorders such as Autism and ADHD, it is hereditary.
For citation of evidence, I recommend talking about prenatal development, and how toxic substances can alter the development of a fetus, which is proven to lead to some developmental disorders, such as Fetal Alcohol Syndrome.
Answer:
Schizophrenia and developmental disorders are genetically connected, and the gene will be found in either the individual's biological parents or the person suffering from schizophrenia or developmental abnormalities.
Explanation:
In eukaryotic cells, where does transcription occur?
A. Nucleus
B. Extracellular matrix
C. Cytoplasm
Explain the difference: a myelinated axon conducts impulses faster than non-myelinated axon of the same diameter
Answer:
A myelinated axon conducts impulses faster than a non-myelinated axon. ... Therefore, in myelinated neurones, the nerve impulse is said to jump from node - to - node, a impulse pathway known as Saltatory Conduction. This means that the action potential does not have to travel along the whole length of the myelinated axon
Explanation:
The only function of the cytoplasm is to protect the organelles.
ЕОО
True
False
Answer:
false
Explanation:
because the cytoplasm also contains substances like enzymes and also regulates the water in and out of the cell
Answer:
false
Explanation:
Modern classification systems are based on structural similarities, fossil record and
- modern classification is based on figuring out evolutionary relationships using evidence from living species, the fossil record, and molecular data. - the evolutionary history for a group of species. ... - each species in a clade has some traits that have changed from its ancestors over evolutionary time.
Hope This Helps! can i get brainliest lol
Explain how the investigation could indicate that chlorophyll is needed for photosynthesis. Include the role of chlorophyll in your explanation.
.............................que es la salud?
Ammonia is commonly used as a fertilizer for plants. It is made when nitrogen gas and hydrogen gas react under specific conditions.
Consider the following reaction:
2 molecules of nitrogen (N2) react with 6 molecules of hydrogen (H2) to produce some amount of ammonia (NH3).
Complete the table below.
H = ?
N = ?
During this reaction, how many molecules of ammonia (NH3) are produced?
Answer:
2
Explanation:
NH3 = N(1) + H(3)
N2H6 = 2(NH3)
= 2
Answer:
4
Explanation:
Just do the math Zoey -.-
En este dominio existen gran variedad de procariotas, con diversidad morfológica y fisiológicas, en este están todas
las procariotas patógenas, su tamaño oscila entre 1 y 40 milimicras, es
a) Protista
b) Eubacteria
c) Archaea
d) Eukaria
Answer:
c) Archaea
Explanation:
Los dominios biológicos son los taxones de más alto nivel, por encima de los reinos y abarcando todos los taxones, caracterizándolos de la manera más generalizada posible, dentro de la clasificación científica. Hay tres tipos de dominios llamados Archaea, Bacteria y Eukarya. Entre ellos, el dominio conocido como Archaea es el que engloba a los organismos procarióticos, unicelulares y patógenos, es decir, capaces de provocar enfermedades en el ser humano.
in order to increase chances of survival in a changing environment, it is important for a species to have
Answer:
One key way by which species evolve over time in response to changes in environmental conditions is adaptation by natural selection acting over generations. Characteristics that aid in effective survival and reproduction in the new environment grow more prevalent, while those that do not become less prevalent.
Explanation:
Okay but who's Candice?
What are the base units the SI units are based on
Answer:
he units in the revised SI are based completely on seven unchanging quantities or “universal constants,” including the speed of light, the amount of electric charge in an electron, and the Planck constant.
hope it helps
4. Diagrams, tables and graphs are used by scientists mainly to
predict the independent variable
test a hypothesis
design a research plan for the experiment
organize data
Answer:
word to my dead When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.
Explanation:
The Montreal Protocol of 1987 provided a global framework to phase out chlorofluorocarbon (CFC) production and use. A though the Montreal Protocol has led to a dramatic decrease in CFCs released into the atmosphere, stratospheric ozone destruction has decreased only slightly.
Answer:
True
Explanation: