Answer:
Explanation:
These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.
how do you propagate trees
Answer:
The simplest method of propagating a tree vegetatively is rooting or taking cuttings. A cutting (usually a piece of stem of the parent plant) is cut off and stuck into soil.
Remove any flowers or fruit on the cutting. Trim the stem to just below where the bottom most leaf meets the stem. On each of the leaves on the stem, cut off half of the leaf. Put the end to be rooted.
which of these organs is an accessory organ of the digestive system?
Answer:
Where is the picture??
Explanation:
Which of the following sentences state a significant conclusion that Gregor Mendel drew from his experiments with pea plants? Traits are inherited in discrete units and are not the result of "blending." Genes are composed of DNA. Recessive genes occur more frequently in the F1 generation than do dominant ones. There is considerable genetic variation in garden peas.
Mendel concluded that the alternative forms of each trait are coded by discrete factors, which were called alleles that combine in pairs to express the trait. Traits are inherited in discrete units and are not the result of "blending."
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After making many crosses that involved different traits -such as plant height, or flower colors-, Mendel observed that, per trait, the F1 only expressed one of the alternative forms, while de other one disappeared.
Mendel named dominant the expressed variant.
Mendel then let these new plants auto pollinate and observed the results in the second generation, F2.
He saw that the variants that had previously disappeared among the F1, reappeared again. Both alternatives for each trait were present in the F2.
Mendel named recessive the second alternative variant.
Mendel explained his results by arguing that discrete factors were responsible for these phenotypes.
These factors should have been present in the F1 in pairs. One of them came from one parental plant, and the other factor came from the other plant. These factors separated again during sex cells formation, producing two types of gametes, each with only one factor.Mendel conclusion about his experiments was that per trait -flower color of plant length-, each plant had a pair of factors -which he named alleles-, and that each factor coded for one of the alternative forms of the traits -white or purple, tall or short-.
He thought that alleles separate -segregate- during the process of gamete formation.
The First Mendel's Law is the first conclusion he took about his experiments and is known as the segregation principle.
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what is the answer tho just asking?
Answer:
I don't see any thing lol
What are organic reservoirs meaning.
When is it important to drink water?
Answer:
d. All of the above
Explanation: correct
Answer:
? why did you post this
Explanation:
True or false: Tonic contraction of smooth muscle in blood vessels is important in maintaining blood pressure.
True or False: Microbiomes are found only within the body of a host, which may be animal, plant, fungal, or even protist.
Where is the center of the cold air mass? ( name the region of the state near the center)
if sodium hydroxide is left alone what state would it turn into ?
Answer:
It will react with the carbon dioxide that is in the air
Explanation:
When it reacts it will turn to sodium carbonate
Hope this Helps
which organelles do both plant and animal cells have in common?
What would be the safest way to reduce the impact of the the non-native red fire ant while minimizing the impact on other organisms
Answer:
The red fire ant is indigenous to South America. In recent years, this invasive species has become a pest for both humans and other ants
crop destruction
What would be the safest way to reduce the impact of the non-native red fire ant while minimizing the impact on other organisms?
A pouring gasoline on ant mounds
B
spraying broad-spectrum pesticides
с
release a species of fly that will prey on the fire ants
D
treating all species of ants with ant killer
Answer: Release a species of fly that ill prey on the fire ants
Explanation:
I assume that was the question with the answers and I had the same question thru study island so here ya go
what are the effects of pollution on the atmosphere?
Answer: This can kill crops or reduce their yield. It can kill young trees and other plants. Sulfur dioxide and nitrogen oxide particles in the air, can create acid rain when they mix with water and oxygen in the atmosphere.
Explanation:
Which of the following structures is part of the peripheral nervous system?
*Cranial and spinal nerves
Brain
Spinal cord
None of the above
Answer:
a. Cranial and spinal nerves
Explanation: is correct
What is an opposing viewpoint to the idea that climate change is real? (no links)
true or false along with natural selection,genetic drift has profoundly affected the evolution of human traits throughout our species history
Answer:
yes
Explanation:
due to drift / variation human has been able to atttain high and advanced level of intelligence and development
the three steps that are required for dna replication are
Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
The three steps that are required for DNA replication are initiation, elongation and termination.
What is DNA replication ?The process in which DNA of a cell under go duplication to produce two copies during S-phase of cell cycle called as DNA replication.
It involves 3 steps such as initiation step where the origin of replication of DNA molecule undergo unwinding into two DNA strands.
An incomplete unzipping by forming replication fork is created is catalyzed by the helicase enzyme.
Secondly in elongation step the DNA polymerase enzymes make the complementary sequence against each parent template strand.
It is an unidirectional, one strand which is synthesized in a continuous manner called leading strand, the strand which is synthesized in a discontinuous manner called lagging strand with Okazaki fragments.
Termination occurs in the last step, when the parent molecule has been completely replicated.
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Cellular respiration is a complex process that
1- occurs before autotrophs are able to carry out photosynthesis
2- occurs only in animals that take in oxygen
3- is performed only by organisms that are incapable of photosynthesis
4- breaks down organic molecules to release stored energy
What does insulator mean
As insulator is a material that doesn't transmit energy easily
Clouds form when the water vapor in air condenses as
Answer:
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.
Explanation:
A trait that is masked or hidden unless there are two is called ...
(Mendelian Genetics Notes)
(1 Point)
an allele
recessive
dominant
incomplete dominant
Answer:
recessive gene
Explanation:
mainly masked by thee dominant gene eg Tt where T is dominant over t,,,there t is recessive..
What controls basic functions such as breathing, heart rate, and pulse?
A.cell body
B.spinal cord
C.frontal lobe
D.brain stem
What does a ribosome do.
Some fungal species live in or on plants, producing compounds that can kill herbivores while feeding off of sugars from its plant host. What type of relationship does this fungus have with its host
what factors are examined by the field of demography? check all that apply.
Answer:
Demography is the statistical study of human populations. Demography examines the size, structure, and movements of populations over space and time. It uses methods from history, economics, anthropology, sociology, and other fields.
what is the purpose of a broth in a microbiology laboratory
The ____________ receives the filtrate from the DCTs of several nephrons and funnels it toward the ____________ .
Answer:
collecting duct, renal pyramid
Explanation:
The collecting duct receives the filtrate from the DCTs of several nephrons and funnels it toward the renal pyramid.
I'm working on an assignment and they all seem true to me. Help?
Which of the following statements about plants is not true?
a. They make their food from carbon dioxide and water through photosynthesis.
b. Land plants have cell walls that help hold their stems upright.
c. They have adaptations that help prevent water loss.
d. Plants absorb food through their roots.
Answer:
A
Explanation:
because plants use atmospheric carbon dioxide and water absorbed from the earth to create organic matter in the process of photosynthesis. On that occasion, oxygen is released.
Answer:
A
Explanation:
I hope this is correct, since every other version I've seen of this question option A is water and oxygen.
Which of the following is NOT part of the non-specific immune response?
A. Inflammation
B. Phagocytosis
C. Antibodies
D. Interferons
D. Interferons are not a part of the non-specific immune response.
What is the function of interferons?Interferons were first described as an antiviral thing that interferes with viral replication in mammalian cells (10). they're secreted from inflamed cells and spark off an innate immune reaction that promotes now not best cytokine production but additionally herbal killer mobile features and antigen presentation.
Interferons (IFNs) — the body's first line of antiviral defense — are cytokines that are secreted by host cells in reaction to virus infection. by using inducing the expression of hundreds of IFN-inspired genes, numerous of that have antiviral capabilities, IFNs block virus replication at many ranges.
Interferons are a circle of relatives of clearly-happening proteins which are made and secreted with the aid of cells of the immune gadget (an example, white blood cells, natural killer cells, fibroblasts, and epithelial cells).
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which type of blood vessel drains blood from the glomerulus?
Answer:
the efferent arteriole
Explanation:
Blood is brought to the glomerulus by the afferent arteriole, and after the filtration process, the blood is carried away from the glomerulus by the efferent arteriole.