Which stimulus causes the roots of seedling to grow downard ?
(_______) stars, however, will last for several billion years, because
they burn their fuel much more slowly. *
Answer:
Smaller
Explanation:
Life Cycle of a Star
Stars are formed in clouds of gas and dust, known as nebulae. Nuclear reactions at the centre (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its size. Very large, massive stars burn their fuel much faster than smaller stars and may only last a few hundred thousand years. Smaller stars, however, will last for several billion years, because they burn their fuel much more slowly.
HELP PLEASEEE ASAP————————
Answer:
U already marked the correct option.
(please help as fast as possible, thanks!)
- Explain the difference between voluntary and involuntary muscles -
Answer:
Voluntary muscles move by conscious thought. Involuntary muscles move without conscious thought.
How are Earth and Saturn similar?
They both have the same mass.
They both would float in water because of low density.
They both have the same number of satellites.
They both have seasons caused by a tilted axis.
True or False, the ultimate goal of the 8th amendment is to prevent tyranny from the government when punishing people?
HELP!
What’s the different properties of hbA and HbS
Answer:
The isoelectric point of normal HbA is 6.9 [91], but HbS has two fewer negative charges per hemoglobin molecule than HbA because glutamic acid residues in the β-chains of HbS were substituted by the valine residues [5], [6]. It shows that HbS has more hydrophobicity than HbA in this condition [10]
Which will most likely cause an increase in the frequency of genetic mutations in
humans?
А
increased exposure to mold spores in the air
B
increased exposure to the rising levels of atmospheric CO2
с
increased exposure to bacteria in drinking water
D
increased exposure to X-rays
Answer:
Increased exposure to X-rays
Explanation:
X-rays shoot harmful radiation through your body, that's why when you go to the dentist or other places and they take a X-ray they give you a lead vest to protect your organs from unneeded radiation.
hope this helps :)
Increased exposure to X-rays is the most likely cause of an increase in the frequency of genetic mutations in humans (Option D).
A mutation is any alteration in the nucleotide (DNA) sequence of the genome in the cells of an organism.Mutation can be caused by physical factors (e.g., X-rays) or chemical agents (e.g., pesticides such as DDT).X-rays are well known to cause mutations by breaking covalent bonds in DNA, which may be erroneously repaired, thereby leading to deletions of nucleotides.In conclusion, increased exposure to X-rays is the most likely cause of an increase in the frequency of genetic mutations in humans (Option D).
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If we compare the Earth's rotation to its revolution around the Sun, which statement is true?
Answer:
it would be a
Explanation:
100 POINTS AND BRAINIEST FOR BEST COREECT ASNWER. Write a four-to-five sentence paragraph that explains how overexploitation contributes toward present-day mass extinctions. Provide a definition of the term overexploitation and at least one example with your answer.
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.
Identify which type of natural selection is described in each case below.
Results in the evolution of the species:
Results in new species:
Favors traits at the two extremes:
No increase in diversity:
One extreme trait is favored:
Diversity decreases:
Diversity increases:
Answer:
Results in the evolution of the species: Directional selection
Results in new species: Disruptive selection
Favors traits at the two extremes: Disruptive selection
No increase in diversity: Directional selection
One extreme trait is favored: Directional selection
Diversity decreases: Stabilizing selection
Diversity increases: Disruptive selection
Explanation:
Directional selection which is also known as positive selection is known to be a mode of natural selection. In this type of selection, an extreme phenotype is favored over other phenotypes. This makes the allele frequency to move in the direction of that phenotype and this takes place over time.
Disruptive selection (known to be diversifying selection) talks about the certain changes in the population genetics whereby extreme values of a particular trait are favored over intermediate values. This results in new species.
While Stabilizing selection is a natural selection whereby there is a stabilization of the population mean on the particular value of a non-extreme trait. Here the diversity is decreases.
Answer: A) directional selection
B) disruptive selection
B) disruptive selection
A) directional selection
A) directional selection
C) stabilizing selection
B) disruptive selection
Explanation: :)
Which sequence shows the correct order for how any rock can become a sedimentary rock?
rock → subduction → melting → solidification
rock → compaction → subduction → melting
O O O d
rock → weathering → deposition compaction
rock → melting → solidification → weathering
Plzzzz help
Answer:
Im not sure but I think its D
Explanation:
What is one job of RNA?
carrying genetic information
manufacturing nucleotides
giving shape to chromosomes
unraveling DNA
Answer:
carring genetic information
Explanation:
No other kind of atom can form the number and variety of molecules that can because it can bond to 4 other atoms at the same time to make carbohydrates, lipids, nucleic acids and proteins.
Hydrogen
Oxygen
Carbon
Sodium
Answer: carbon
Explanation:
Carbon is the common “ building block” because of its ability to to bond to 4 different elements at the same time.
The atom that can form a number and variety of molecules because it can bond to 4 other atoms at the same time to make carbohydrates, lipids, nucleic acids and proteins is called carbon.
Carbon atom is the central element that contributes to the formation of biological macro molecules.
Examples of these biological macro molecules that are essential for life are carbohydrates, lipids, nucleic acids and proteins.
Carbon atom is considered a very important atom that can form the number and variety of biological molecules because:
each carbon atom can form four chemical bonds with other atoms,this is because it has sp³, sp², or sp hybridization in its compounds.it forms bond in all these dimensions and make molecules with complicated shapes.Learn more here:
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Lab report using a dichotomous key
Answer:
I'm not sure what you are asking..
How confident are you in your ability to describe how the weather that happens is related to the movement of air masses?PLEASEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPP MEEEEEEEEEEE PLEASEEEEEEEEEEE
I need help with this
Answer:
Condensation
If you happen to know the answers or at least some please please please let me know it would help so much
Answer:
both cells divide
both dna makes a copy of itself
both help with the reproductive system
sorry, that's all i could help with
good luck :)
hopefully, this helps
have a great day !!
Como ha llevado la evolucion a que este insecto phyllium giganteumparezca una hoja segun la teoria de lamarck
Answer:
Due to adaptation of the environment.
Explanation:
Evolution has led this insect phyllium giganteum to appear like a leaf according to Lamarck's theory because this insect lives and feed on the leaf environment so in order to save itself from other predators it takes the shape and structure of leave in order to hide itself so this adaptation slowly transmitted from the parents to the offspring and as a result evolution occurs.
PLEASE HELP I WILL HIVE BRAINALIST AND EXTRA POINTS
Answer:
Option A seems to be the best answer
Explanation:
Although the answer would be usually glycogen but it is later stored so definitely fatty acids would be the option in this case
Please help, will mark brainliest!!
Which describes all of the organisms shown in the food web?
A. Unicellular
B. Multicellular
C. Producer
D. Consumer
Answer:
multicellular
Explanation:
I am not 100% sure but multi means many and there are many animals so I'm going with that
Answer:
b
Explanation:
They are all multicellular organisms (there are no single-celled ones, like diatoms). Only some are producers (like the cactus) and only some are consumers (the animals that can't produce their own food).
When an object does not move it is because there are unbalanced forces acting on it. please help!
A. True
B. False
Answer:
I think that the answer is False.
Explanation:
Which statement describes the magnetic field inside a bar magnet?
a. It points from north to south.
b. it points from south to north.
c. it forms loops inside the magnet.
d. There is no field within the magnet.
The statement that describes the magnetic field inside a bar magnet is it points from south to north. The direction of the magnetic field lines outside is north pole to south pole.
What do you mean by the magnetic field?The magnetic field may be defined as the area around a magnet where a magnetic force is experienced.
The direction of the magnetic field is taken from the outward of the north pole and into the south pole of the magnet. The magnetic field lines begin near the north pole and extended towards the south pole of the magnet.
Therefore, the statement that describes the magnetic field inside a bar magnet is it points from north to south.
To learn more about Magnetic fields, refer to the link:
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Biology questions
if you only know the answer to one that's ok I just need some help
1. Which digestive enzyme is made in the Mouth? How does it help digestion?
2. What digestive enzyme is made in the Stomach? How does it help digestion?
3. What other chemical is made in the Stomach? How does this help digestion?
4. What does the Pancreas make that helps to neutralize the acid from the stomach as it goes into the small intestine?
5. What enzymes make up Pancreatic Juice? What does each enzyme do to help digestion?
6. What chemical does the liver make? What does it do?
7. What does the gall bladder store?
Answer:
1. Salivary amylase is the primary digestive enzyme in the mouth. I helps to break down carbohydrates.
2. Pepsin is produced in the stomach and breaks down proteins.
3. Protease is also found in the stomach. It breaks down proteins and peptides.
4. Bicarbonate is a basic substance made by the pancreas and helps to neutralize stomach acid.
5. Bicarbonate ions to neutralize the hydrochloric acid of chyme.
6. The liver secretes bile, a digestive fluid; metabolizes proteins, carbohydrates, and fats; stores glycogen, vitamins, and other substances; synthesizes blood-clotting factors; removes wastes and toxic matter from the blood; regulates blood volume; and destroys old red blood cells.
7. Bile
Explanation:
Lichens, like the one shown in the picture below, are usually combinations of algae and fungi that have a beneficial “mutualistic” relationship know as _____?
saprophytic
parasitic
symbiotic
autotrophic
Answer:
Symbiotic
Explanation:
symbiotic fungi have a beneficial relationship with the producer
The diagram below shows two different cells undergoing mitotic cell division.
Which statement best describes these cells?
True or False. Cork is not a living organism.
True or False. Some organisms are made of only one cell.
True or False. Ribosomes are found outside of the cytoplasm of a cell.
Please answer all of these
Answer:
F
T
F
Explanation:
1. Roommate #1 was out of town for a 1 week conference in March starting on the Waning
Crescent BEFORE the New Moon. What days was she gone?
1. march 16-23
2.march 23-30
3.march 9-16
4. march 2-9
Answer: #3
Explanation:
Why don't offspring always look like their parents?
A. The way offspring look also depends on their behavior traits.
B. The way offspring look also depends on the amount of nutrients received during birth.
C. The way offspring look depends on the combinations of alleles they inherit and on interactions between traits and the environment.
D. The way offspring look depends on the combinations of alleles they inherit and on interactions between genes and the environment.
Answer: The answer is C. The way offspring look depends on the combinations of alleles they inherit and on interactions between traits and the environment.
Explanation: Each baby isn't an exact clone of the parents. They share different alleles from different parents. Think about it. If the dad and mother didn't look alike then how could the baby have the same physical features as both combined. So basically, The way offspring look depends on the combinations of alleles they inherit from their parents.
Can I please have brainliest?
Classification of Living Organisms Common Name Bush Anole Crested Penguin Ferret Muskrat Kingdom Animal Animal Animal Animal Phylum Chordata Chordata Chordata Chordata Class Mammalia Order Reptilia Aves Mammalia Squamata Sphenisciformes Carnivora Polychrotidea Spheniscidae Mustelidae Rodentia Family Muroidea Genus Polychrus Muroidea Eudyptes Mustela Pachyrhynchus Putorius Species Femoralis Zibethicas According to the above table, which animals are more closely related?
A. Bush Anole and Crested Penguin
B. Crested penguin and Ferret
C. Ferret and Muskrat
D. Bush Anole and Ferret
Answer:
c
Explanation: