What type of variation is nessary for natural selection to occur
Answer:
Genetic variation
Explanation:
Genetic variability (diversity) stems from two basic processes: mutation and recombination.
If there were no mutations, all genes would exist in only one form, they would not have alternative forms.
Since phenotypic variability also depends on genetic variability, it is clear that the processes of mutation and recombination contribute to the creation of a large number of different phenotypes.
Science is an attempt to explain
A. the truth concerning all things in Science
B. the supernatural
C. superstitions
D. natural phenomena
Answer:
its D i took the k12 test i hope this helps
Explanation:
Which physical property is most helpful for separating a mixture of sand and
gravel?
A. Particle density
B. Boiling point
C. Particle size
D. Magnetic attraction
Various methods can be employed in the separation of heterogeneous mixtures from a solution comprising the solute and the solvent.
The correct answer is:
Option C. Particle Size.
This can be explained as:
Sand and gravel have two different sizes and can be separated on the basis of particle sizes.Sieving is a method that can be employed to separate gravel from sand.Sand particles being small will pass through the sieve while gravel being big in size will remain on the top of the sieve.Therefore, particle size will be the parameter by which sand and gravel can be separated.
To learn more about separation techniques follow the link:
https://brainly.com/question/10666014
2 genetic disorders ASAP
Answer: Down syndrome and cystic fibrosis
Answer:
downsyndrome
cystic fibrosis
Explanation:
What is the energy input to the radiometer system? What form(s) of energy are present in the system as a result?
Answer:
What happens to the work done on a system? Energy is transferred into the system, but in what form? Does it remain in the system or move on? The answers depend on the situation. For example, if the lawn mower in Figure 1a is pushed just hard enough to keep it going at a constant speed, then energy put into the mower by the person is removed continuously by friction, and eventually leaves the system in the form of heat transfer.
Explanation:
because my mom told me
Please help!! And thank you!!
Well, understand it :-
The temperature rises as you get higher in the stratosphere and in the thermosphere.Temperatures decrease as you gain height in the troposphere and the mesosphere.
DNA is unique to each____________.
(A. Recipe
(B. Organism
(C. Identical twin
(D. Still Object
Answer:
Organism
Pft I can't aswer this question without writing 20 characters so yeah just fluffing
Answer:
B. organism
Explanation:
Which depressive disorder features symptoms that are milder but longer lasting than the symptoms of the other depressive disorders?
Double depression
Major depressive disorder, single episode
Major depressive disorder, recurrent
Persistent depressive disorder
Answer:
Dysthymic disorder
Explanation:
The symptoms of dysthymia are similar to those of major depression but are less severe. However, in the case of dysthymia, symptoms last longer. A person has to have this milder depression for more than two years to be diagnosed with dysthymia.
Answer:
hi
Explanation:
What specific type of transport is represented in the diagram above?
1. Facilitated diffusion
2.active transport
3.osmosis
4. Endocytosis
Answer:
facilitated diffusion
What is the function of the sporangium?
Answer:
A sprongium is a structure in certain plants and other organisims that is charged with making and storing spores.
Explanation:
"A sporangium (plural: sporangia) is the capsule structure belonging to many plants and fungi, in which the reproductive spores are produced and stored. All land plants undergo an alteration of generations to reproduce; the sporangium is borne upon the sporophyte, which is the asexual second generation structure."
I hope this helped! :D
Answer:
protects the developing mother spore cells
Explanation:
got 100% on the quiz
Which is considered a chemical mutagen?
Answer:
The chemicals which help in imposing heritable changes in the genotype of an organism are termed as "Chemical Mutagens". "Hydroxylamine" (NH₂OH) and "Nitrous acid" (HNO₂) are chemical mutagens.
Explanation:
Which organ is responsible for storing urine?
kidney
large intestine
anus
bladder
Answer:
bladder
Explanation:
it stores urine
Help me please !!!
Which event in meiosis increases genetic variation within a population?
A. DNA condenses to form chromosomes.
B. Segments of chromosomes cross over.
C. Chromosomes duplicate themselves.
D. Chromosomes form pairs.
Answer:
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occur during prophase 1
How does the nitrogen cycle control the quality of water within a aquarium and what could cause an imbalance (build of toxic chemicals such as ammonium).
Answer:
Explanation:
Ammonia is removed from an aquarium system through the use of a biofilter. The biofilter provides a substrate on which nitrifying bacteria grow. These nitrifying bacteria consume ammonia and produce nitrite, which is also toxic to fish. Other nitrifying bacteria in the biofilter consume nitrite and produce nitrate.
pleas brainleast me
Both the tropical rain forest and the tropical savanna experience/contain:
Which organisms replicate cells by mitosis?
A. animals and bacteria
B. animals and plants
C. bacteria and plantS
D. darchaea and bacteria
E. archaea and plants
Answer:
B. because prokaryotes (bacteria) use binary fission instead of mitosis. i hope this works
Location of Station Time Between Arrival of P and S Waves Approximate Distance from Epicenter Length of Radius of Circle (in cm) 1 Buenos Aires 1 min. 50 sec 1,600 km Lima 3 min, 45 sec 2,400 km Brasilia 4 min, 5 sec 2,880 km
Answer:
1600km * 2 / 1000 = 3.2cm
2400km* 2/ 1000 = 4.8cm
2880km * 2/ 1000 =5.76cm
Explanation:
interpret that was the worst of times and it was the worst of times.from a tale of two cities
Answer
search it out
Explanation:
search
A plant uses sunlight to make its food. What kind of energy transition is
taking place?
O A. Sound energy to heat energy
B. Mechanical energy to light energy
C. Light energy to chemical energy
D. Chemical energy to heat energy
Answer:
I don´t correctly remeber this part of science, but i am going to take a guess and say D) Chemical energy to heat energy
Explanation:
Answer: I believe it is C. Light energy to chemical energy.
Explanation: I think it is C. because this process is photosynthesis which is the process of taking sunlight (which would be light energy) and making oxygen and glucose (which I think would be chemical energy).
similarities between renal atery and renal vein
Answer:
Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.
Explanation:
when an earthquake occurs, data from one seismograph can tell you ____ .
Answer choices :
a) exactly where the epicenter is
b) how far away the epicenter is
c) in what direction the epicenter is
Answer:
How far away the epicenter is, C.
Explanation:
Seismographs record earthquake strength too.
where is the dna located in the eukaryotic cell
Answer:
Nucleus
I did this and I think it was right
Answer:
nucleus
The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA.
what makes a compound different than a mixture
Macronutrients and Micronutrients: Mastery Test An individual with a protein deficiency typically experiences increased susceptibility to illnesses, muscle and joint pain, and diffic concentrating. Why does a protein deficiency cause such diverse symptoms? А. because the only role of proteins is to provide the enzymes that all cells need to function B. because proteins are the primary Reset Next
Answer:
its B option 90% of our body is made up of protien so deficiency of protiens causes serious problems.
Explanation:
Please help :( I need this I will
Answer:
Explanation:
tides because of the moons gravity pull
mark me brainliest .-.
Answer:
C. Ocean Tides
What happens during the process of cellular respiration?
edge nuity
Answer:
sourced from wiki
Explanation:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
1. Which image represents the flow of a longshore current in relation to a sandy beach?
Answer: Option C
Explanation:
When waves of water approach the beach, they do so as an angle because they have been slowed down by the first parts of the beach that they have encountered.
When they hit the beach at an angle, they come back to the water and keep doing so like the movement shown in option D. This constant motion moves the sand and other particles on the beach progressively and the current that does so is the Longshore current which moves parallel to the coastline.
someone may ask you to distill a complicated idea into a brief summary that gets right to the point. how does this relate to distillation in chemistry
Answer:To separate two or more liquids by distillation, you first heat them in a flask. The more volatile liquid (the liquid with the lower boiling point) will typically evaporate first and the vapor will pass into a ... the refluxing liquid can condense, re-evaporate, and condense again, essentially distilling the ...
Explanation:
Distilling a complicated idea into brief summary that gets right to the point relates with distillation in chemistry in that both requires breaking a complex idea/substance into smaller component pieces.
In chemistry, distillation is a technique used for separating a liquid mixture into its components by allowing each component to boil, evaporate off the mixture, and then allowed to condense.
Because the each component of a mixture has different boiling point, this attribute is applied in distillation. The mixture is placed in a distiller and heated. At their respective boiling temperature, each component evaporates off the mixture and condenses at a collection point by a cooling water.
This is what it means when a complicated idea is being asked to be distilled. Such idea is to be broken down into smaller, concise ideas that can easily be executed as part of the whole idea.
More on distillation can be found here: https://brainly.com/question/15946045
Janelle is preparing to audition for a position in her community dance company. She has been practicing a series of dance steps from a performance she did the previous year. What two major parts of her brain will be most active as she practices? (1 point)
Thalamus and pituitary gland
Hypothalamus and brain stem
Cerebellum and the temporal lobe
Medulla oblongata and pons
(WILL GIVE BRAINLIEST!!)
Answer:
i think the cerebellum and the temporal lobe is the answer since they promote physical and mental ability
Explanation:
hope this helps
(T/F) Most cells reach a certain size, stop growing, and then divide.
Answer:
True
Explanation:
Most of the cells in the body of an organism reach a certain size, stop growing after a certain size, and then undergo division. Cells maintain the cell number in body through continuous division. Thus, the given statement is true.
What are Cells?Cells are the basic unit of life. Cells are the building blocks of living organisms. The human body is composed of cells. These cells provide the structure for the body, take in nutrients from food, convert the nutrients into usable form of energy, and carry out specialized functions such as digestion, respiration, excretion, and circulation, etc.
Specialized cells in the body of an organism have a certain size and shape and these undergo growth and division. Cells undergo cell cycle which consists of different phases such as interphase and M-phase where the cell grows in size and shape and divides to form more cells and thus maintain their number.
Learn more about Cell here:
https://brainly.com/question/3142913
#SPJ2