The best statement that describes a difference between artificial and natural selection is natural selection leads to greater fitness over time while artificial selection has no sometimes a damaging effect on fitness.
What is natural selection?Natural selection is the process by which heritable traits conferring survival and reproductive advantage to individuals tend to be passed on to succeeding generations and become more frequent in a population.
Artificial selection, on the other hand, is the intervention by humans in the breeding of plants or animals in order to preserve selected genetic traits.
One major difference between natural and artificial selection is that natural selection leads to greater fitness over time while artificial selection has no sometimes a damaging effect on fitness.
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NEED HELP PLEASE IT IS DUE 20 MINUTES, I WILL MARK BRAINIEST.
16. The rate of weathering depends primarily upon the area's _______________________.
Answer:
Climate
Explanation:
Hope this is right :)
Sorry if I get it wrong
The circulatory system of the frog..
A. carries oxygen to all of the cells
B. carries food to all cells
C. carries water to all cells
D. all of the above
Answer: A
Explanation:
The blood carries oxygen and nutrients to cells and carries waste products away.
Pls help..............................................................................................
Answer:
it's the earth's crust
Explanation:
cause it is
After initially swallowing food, what is repeated until the food is ready to move on to the Omasum?
A. Acid kills the bacteria.
B. Honeycomb like ridges absorb the nutrients.
C. The animal regurgitates food for chewing until it is ready
for the the next chamber.
D. Gastric juices are secreted to break down food.
Answer:
Gastric juices are secreted to break down food
Describe the general functions of the major systems of the human body.
Answer:
Integumentary System: acts as a barrier to protect the body from the outside world (ie. skin, hair, and nails)
Circulatory System: carries oxygen and nutrients to cells, carries waste away from cells (ie. heart and blood vessels (veins and arteries))
Digestive System: converts food into molecules that can be used by cells (ie. mouth, esophagus, stomach, small intestine, large intestine)
Respiratory System: provides oxygen to the blood and removes carbon dioxide from the body (ie. nose, mouth, pharynx (throat), trachea, and lungs)
Immune System: fights off illness and disease (ie. lymph nodes, white blood cells, and spleen)
Muscular System: allows for movement (ie. cardiac muscles, skeletal muscles, and smooth muscles)
Nervous System: coordinates all body functions, sends signals to and from all parts of the body (ie. brain, spinal cord, and neurons)
Skeletal System: support the body, protect internal organs, store minerals (ie. bones and joints)
In the year 100, Ptolemy introduced the geocentric model of the solar system. By the year 1542,
Copernicus introduced a new model of the solar system called the heliocentric model. With this
example in mind, which of the statements below best summarizes what we learned from these models?
Answer: Ptolemaic system, also called geocentric system or geocentric model, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses. The Ptolemaic system is a geocentric cosmology; that is, it starts by assuming that Earth is stationary and at the centre of the universe. The “natural” expectation for ancient societies was that the heavenly bodies (Sun, Moon, planets, and stars) must travel in uniform motion along the most “perfect” path possible, a circle. However, the paths of the Sun, Moon, and planets as observed from Earth are not circular. Ptolemy’s model explained this “imperfection” by postulating that the apparently irregular movements were a combination of several regular circular motions seen in perspective from a stationary Earth.
Explanation:
i hope this help
A newly developed drug causes users to lose some muscle control and slur their words, The drug also results in a slowing of central nervous system activity. MOST likely this drug is a:
A newly developed drug causes users to lose some muscle control and slur their words, The drug also results in a slowing of central nervous system activity. Depressants slow the central nervous system.
What is Nervous system?Signals are sent from the brain to the rest of the body, including the internal organs, via the nervous system. Thus, the nervous system's activity regulates a variety of functions, including the capacity to move, breathe, see, and think.
The nerve cell, or neuron, is the building block of the neurological system. There are around 100 billion neurons in the human brain. A neuron has a cell body, which contains the cell nucleus, as well as distinct extensions known as axons and dendrites.
Different neuronal types control or carry out various functions. For instance, motor neurons help the brain send signals to the muscles that cause movement.
Therefore, A newly developed drug causes users to lose some muscle control and slur their words, The drug also results in a slowing of central nervous system activity. Depressants slow the central nervous system.
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Worms live in a habitat of wet soil which of the following scientist is most likely to have believed that worms are made of soil
The title giving to people like Carnegie who invested their money to start business, such as his steel monopoly
A. Entrepreneur
B. Nativists
C. Populist
Which statement is the best description of an ecosystem?
Answer:
biological community of interacting organisms and their physical environment
6. Sequence the rock layers below from oldest to youngest: H.E.4A.5
A
B
с
D
E
a. CBADE
b. CBDEA
c. CBEAD
d. CBEDA
Answer:
Answer
Explanation:
Hemophilia is a rare recessive genetic disorder in which the recessive version of the gene does not produce blood-clotting factors. A woman whose father had hemophilia marries a normal man. They have two children: a boy and a girl. What are the chances of the boy being a hemophiliac? _________ What are the chances of the girl being a hemophiliac? _________ Show your work with a Punnett Square.
Answer:25 , 0
Explanation:
XX©(mother being the carrier as her father was hemophilia- females can only be carrier of hemophilia ) when crossed with normal father produces offspring XX©, XY, XY©, XY. Therefore chances of boy being hemophilia=(1/4)*100=25.
Chances of girl being hemophilia= 0.
Quels sont les 2 moyens de reproduction du glaïeul ?
In which physiological process does a flower play a role in plants?
A. transport
B. photosynthesis
C. absorption
D. reproduction
Potassium is the major cation in the body. It plays many important roles, including the excitability of nerves and muscles. Where is this action particularly important
Answer:
in the heart
Explanation:
hope it's help
what are the functions of the following? (Make it simple)
Vacuole
Cell Membrane
Answer:
Vacuole- Function of vacuole is they help to maintain water and minerals balance in cell.
Cell Membrance- The functions of cell membrane are:
They keep toxic substances out of the cell.It only allows sensitive material to enter and exist in cell.please help me in Science grade 8th
Answer:
Both earthquake and volcanoes are concentrated in specific regions.
Explanation:
The distribution of earthquake on earth is concentrated in specific zones where the plate tectonic meets or fuse with each other. Volcanoes are also concentrated in specific regions on the earth. Most volcanoes are concentrated on the edges of continents, on island chains, or long mountain ranges beneath the sea. There is a great relationship between earthquake and volcanoes because volcanic eruptions is the cause of earthquake in a region.
How would you describe the process of genetic information being passed from parent to offspring in organisms like bacteria?
A. The organism undergoes mitosis and creates genetically diverse offspring
B. The organism undergoes meiosis and creates genetically diverse offspring
C. The organism undergoes binary fission and creates genetically identical offspring
D. The organism undergoes sexual reproduction and creates genetically identical offspring
Answer:
C. The organism undergoes binary fission and creates genetically identical offspring
Explanation:
This because binary fission is the means of reproduction in prokaryotic organisms like bacteria. This refer to the process where a single cell divided into two or more and each looking more exactly like the parent cell..
the process of binary fission, a particular parent cell replicate its genetic material or DNA and then divides into two parts by a process called cytokinesis and each new organism produced then receive one copy of DNA. This occur in bacteria
is the statement true or false? plant cells have chloroplast, but no mitochondria?
Answer:
False
Explanation:
Plant cells have both but animal cells have only the mitochondria minus the chloroplast.
Hey guys! can someone write a summary on the topic of cloning?
Answer: Cloning describes the processes used to create an exact genetic replica of another cell, tissue or organism. The copied material, which has the same genetic makeup as the original, is referred to as a clone. The most famous clone was a Scottish sheep named Dolly
Explanation:
Answer:
Write your own work. I mean I know you did just had my answer deleted because I called you out the first time. So take the advice
Explanation:
What causes 37% of all pollution?
Answer:
There are a variety of examples that cause the problematic issue of pollution- Usually air pollution can be caused by the alteration of gases, solid and liquid particles suspended into the air. If we were to contemplate on how human causes lead to pollution, vehicles exhaust fumes are possibly one of the most affecting in air pollution, as well as the exhaust from industrial factories and plants. Human reasons have majorly led to pollution.
in VDJ recombination occurs in the Group of answer choices variable region of the heavy chain. constant region of the light chain. variable region of the light chain. Both the light and heavy chain.
Answer:
constant region of the light chain.
Explanation:
The VDJ recombination is defined as the process where the T cells as well as the B cells are randomly assembled from the different gene segments. These are mainly known as the variables (V), the diversity (D) and the gene (G). This is done in order to generate the unique receptors which is also called as the antigen receptors so that they can collectively recognize the different types of the molecules. It mainly occurs in the constant region of the light chain.
Which explanation explains why the Northern Hemisphere gets more direct sunlight in the Summer?
Probably too late answering this.
I don't know if they gave you answer choices, but something like:
"The way the earth is tipped on its axis in the summer has the Northern Hemisphere most closely angled to face the sun"
is what I would say.
hey i really need help in deciding the answer for the question
B. have a great rest of your day :)
Landfills are one source of CO2. As garbage decomposes, it releases CO2 into the air. Can you think of at least one
way that humans can reduce the amount of trash they dump in landfills?
Answer:
Recycling
Explanation:
Less garbage will be thrown away
Which would most likely cause a forced migration due to loss of habitat?
a short-term change
a long-term change
death
adaptation
Answer:
short term
Explanation:
Answer:
short
Explanation:
edg
7. The _____________ is a collection of buried, long-dead organisms and can tell us information about prior ancestors - the _____________ a fossil is, the ______________ it is in age and the ___________ related it is to modern organisms.
Answer:
Fossil.
Explanation:
Fossil is a collection of buried, long-dead organisms that can tell us information about ancestors of an organism. The physical features of fossil provides information about its relationship with modern organisms. The fossil which is present in very deep in the soil are more older than the fossil that is present in less depth. We can find age of the fossil by using radiometric dating methods which tells us about the existence of fossil on the earth.
A ________ is a unicellular or multicellular organism that is heterotropic; feeding off dead organic matter or a parasite, feeding off living organisms; reproduces through spores.
Answer:
A fungi is a unicellular or multicellular organism that is heterotropic; feeding off dead organic matter or a parasite, feeding off living organisms; reproduces through spores.
Explanation:
FUNGI -: Fungi can be single-celled organisms or multicellular organisms with a great deal of complexity. They can be found in almost any habitat, but the majority of them reside on land, primarily in soil or plant material, rather than in the sea or fresh water. Decomposers are organisms that live in the soil or on dead plant materials and play a vital part in carbon and other element cycling. Some are plant parasites that cause illnesses such mildews, rusts, scabs, and canker. Fungal diseases in crops can cause a farmer to lose a lot of money. Animals are afflicted by a small number of fungus. Athletes' foot, ringworm, and thrush are examples of human skin diseases.
Fungi play an important part in the breakdown of organic materials and in the cycling and exchange of nutrients in the environment. They've long been utilized as a direct source of human food in the form of mushrooms and truffles, as a bread leavening agent, and in the fermentation of a variety of foods like wine, beer, and soy sauce.
Hence , the answer is fungi.
If a base is deleted, a _____ mutation occurs.
A. substitution
B. insertion
C. point
D. frameshift
Answer:
Option D. A frameshift mutation occurs.
Answer:
D. frameshift
Explanation:
If a base is deleted, a frameshift mutation occurs. Hope it helps you !!