Answers
Answer:
Chitin
Explanation:
Related Questions
Helppp it’s really important
Answers
Answer:
option (a) because....,
Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). ... Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA)
option (b) not because,
Within that centrosome there are two centrioles. And centrioles are physical objects made up of things called microtubules.
option (c) not because....,
Centromere repeats in humans are made up of alpha-satellite DNA, a ∼171 bp sequence or monomer that is iteratively repeated. Alpha-satellite monomers are arranged head-to-tail and organized into repeated arrays called higher order repeats (HORs) that range from 0.2 to 5 megabases (Mb) and are chromosome specific.
not option (d) because...,
Centromere repeats in humans are made up of alpha-satellite DNA, a ∼171 bp sequence or monomer that is iteratively repeated. Alpha-satellite monomers are arranged head-to-tail and organized into repeated arrays called higher order repeats (HORs) that range from 0.2 to 5 megabases (Mb) and are chromosome specific.
hope it becomes helpful to you ☺️☺️
good luck
Compare the practices of shelterwood cutting, clearcutting, and seed-tree cutting.
Answers
Answer:
Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years. Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area.
Explanation:
Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years. Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area.
What happens in the process of clearcutting?Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years.
Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area. Seed-tree cutting and shelterwood cutting allow for the harvested areas to recover over time without direct intervention.
The scale of clear-cuts throughout Oregon is limited by law, although proprietors have been required to leave trees throughout specified locations to preserve waterways as well as provide wildlife habitats.
Therefore, Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years. Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area.
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4. You must build a model of an aquifer for a science
project. What material would be the best to use
for the layer that will hold water?
a. an impermeable material, such as clay
b. a liquid, such as oil
c. a permeable material, such as gravel
d. a material that does not have pores
Answers
Answer:
I would say A
Explanation:
which organ of the female reproductive system produces milk?
Answers
Answer:
The mammary gland
Explanation:
The mammary gland is a gland located in the breasts of females that is responsible for lactation, or the production of milk.
Hope this helps!
Answer:
The breast
Explanation:
The breasts are organs of the female body that contains milk ducts, adipose tissue, and mammary glands. The two breasts are located on the left and right sides of the thoracic region or upper ventral region of the body. In the middle or hub of each breast is a nipple, which is highly pigmented and releases milk when stimulated.
True or false evolution occurs when there is a change in the gene pool of a population
Answers
Answer:
False
Explanation:
It might mean:
1. There was a population bottleneck such as a mass death event
2. Antigenic drift - changes in prevalence of some gene types due to random chance
Veins transport ____ blood.
fill in the blank please
Answers
Answer:
Veins transport Deoxygenated blood
One day you were suddenly awakened by a ghostly shriek as if it were coming from
beneath your bed. Then a shadow seemed to advance towards you. You felt choked and
lost your consciousness. When you regained to your senses you were on your bed,
puzzled but safe. Describe your experience in the form of a short story in about 200–250
words.
(Use only the past tenses, title the story and have a moral at the end)
Answers
Answer:
THE NIGHTMARE
I woke up with a start, sweating profusely, my heart pounding erratically against my chest. My hands were shaking uncontrollably and I held my pillow close to my chest to clam my nerves. I had heard it. There was no doubt in it. A loud, high-pitched shriek, which sounded nothing like a human cry. It was surreal, making a shiver to creep up my spine. I twisted my hands together in nervousness, and murmured a prayer to god. The ghostly sound had resonated from beneath my bed. I had read way too many horror stories to not be scared by now. My throat felt dry and parched and I longed for a sip of water. But I had to go downstairs to fetch the jug. That meant I had to get down from my bed. And there was no way I would do that. Not now, when I was literally scared to death. I swallowed hard. My breathing had slowed down a bit but my heartbeat was still erratic. I perked up my ears and waited to see if the shrieks continued. I badly wanted to cover myself with my blanket but I was too scared to move an inch. I waited for about a minute and could hear no sound. This eased me a bit. Just when I mustered the courage to lie back down and go back to sleep, I felt a shadow whisk past me, sending the curtains flying. I brought my hands to my mouth to stop myself from crying out in terror. It was the silhouette of a girl, a tall, slender figure that I was sure by now was somewhere around me. I felt my eyes brimming with tears but I held my cries back. It was when the shadow reappeared, this time closer to me, near my nightstand. And before I could register what was happening or cry out loud for help, the figure advanced towards me, and all of a sudden, held me in a death grip. I felt myself being choked so tightly that no sound was escaping my mouth, black dots swimming in my vision. Soon enough, I plunged into darkness. After what felt like hours, I opened my eyes to be greeted with the golden rays of the sun streaming in through the window near my bed. I had a slightly blurry memory of yesterday night. I felt around my surroundings, and was met by relief when I could feel the blankets and my pillow beside me. Overjoyed by the fact that I was safe, and that it all had been just a silly nightmare, I thanked God and got out of bed to start my day.
-
Hope it helps u!
Explanation:
Select the statement(s) that support bird beak adaptations as
supporting evidence for the theory of natural selection.
-The top bird with a beak adapted for
insect eating would not succeed on a
Galapagos Island with little insects but
plentiful seeds.
-The middle bird with a woodpecker
beak adapted for seed eating most
likely could dig deeper for larger,
harder covered insects more
successfully than the top bird with the
insect eating beak.
The bottom right bird with a beak
adapted for seed eating would succeed
on a Galapagos Island with plentiful
insects but little vegetation.
The bottom right bird with a beak
adapted for seed eating would succeed
on a Galapagos Island with plentiful
vegetation and few insects.
Answers
Answer:
-The top bird with a beak adapted for insect eating would not succeed on a Galapagos Island with little insects but plentiful seeds.
-The middle bird with a woodpecker beak adapted for seed eating most likely could dig deeper for larger, harder covered insects more successfully than the top bird with the insect eating beak.
-The bottom right bird with a beak adapted for seed eating would succeed on a Galapagos Island with plentiful vegetation and few insects.
Explanation:
The theory of natural selection explains that organisms undergo changes in their physical and genetic features that make it possible for them to adjust to their environments. There are different types of birds having different shapes of beaks adapted for life in several environments.
There are insectivorous birds whose beaks are adapted for eating insects, granivorous birds with short, conical beaks for cracking seeds, frugivorous birds adapted for eating fruits, nectivorous for sucking nectars, among others. The adaptations are unique to the birds and determine their survival and feeding habits in several environments.
im not sure about this, please help explain :( will mark brainliest
A small group of birds became isolated from a large population when deforestation occurred for the development of new buildings. Over the course of a few generations, the gene pool of the small group became drastically different from the original population. Which of the following best describes this occurrence?
A selective process caused an increase in the population's genetic variation.
The founder effect caused the chance event that altered the allele frequency.
Bottleneck effect led to over-representation of certain alleles in the new gene pool.
Gene flow led to an increase in the gene pool's allele frequencies.
Answers
I'm thinking it's the founder effect, which according to something I found on the Internet is genetic variation from when a population originates from a small amount of species.
Bottleneck effect led to over-representation of certain alleles in the new gene pool. Therefore, option (C) is correct.
What is The bottleneck effect?
The phenomenon known as the bottleneck effect takes place when a population suffers a significant decrease in size, which leads to a reduction in the amount of genetic variation in the population. In this hypothetical situation, the clearing of land for new construction and the introduction of new structures led to a small group of birds becoming cut off from the larger, original population of birds.
Due to the fact that this small group was kept apart from the larger population, a phenomenon known as a bottleneck effect occurred. This caused the gene pool to become strikingly dissimilar to that of the original population as a result of the overrepresentation of certain alleles in the new gene pool. As a result, the response that should be chosen is option C.
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High-altitude cirrus clouds are primarily formed from which substance?
A.
ozone molecules
B.
nitrogen compounds
C.
carbon dioxide gas
D.
solid ice crystals
Answers
Answer:
D. Solid Ice Crystals
Explanation:
"Cirrus clouds are wispy, curly, or stringy. They are found high in the atmosphere—typically higher than 6,000 meters (20,000 feet)—and are usually made of ice crystals." -National Geographic
The density of ocean water varies from place to place across the Earth. What factors control the density of ocean water?
A)
depth and salinity
Eliminate
B)
depth and temperature
salinity and life-forms
D)
salinity and temperature
Answers
Answer: D. Salinity and Temperature
Explanation: Ocean water gets more dense as temperature goes down. So, the colder the water, the more dense it is. Good luck! :D
Answer:
D
Explanation:
salinity and tempature
what are the sequence of events in the replication of DNA
Answers
Answer:
There are three main steps to DNA replication: initiation, elongation, and termination. In order to fit within a cell's nucleus, DNA is packed into tightly coiled structures called chromatin, which loosens prior to replication, allowing the cell replication machinery to access the DNA strands.
5. Which of these animals hibernates through the cold winter?
A. White-tailed deer
B. Black bear
C. wild boar
D. Turkey
Answers
black bear
hope it helps you
....
True or False: San Andreas Fault is an example of a Convergent Boundary.
Answers
Which species do you think is the best adapted to a diet of small, delicate seeds? explain why you think so
Which species do you think is the best adapted to a diet of large, tough-to-crack seeds? Explain.
Answers
Answer:
the second bird below the first one
Explanation:
birds need a big beak to crack shells while some need small ones to eat small seeds.
what is energy?How dose energy work
Answers
“In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.”
Answer:
energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.
How are "seasonal" fresh fruits and vegetables readily available 365 days a year?
Answers
Describe the function of a gastrovascular cavity
Answers
Answer:
The gastrovascular cavity is a structure found in primitive animal phyla. It is responsible for both the digestion of food and the transport of nutrients throughout the body. The cavity has only one opening to the environment. Food goes in and waste comes out that same opening, making it a two-way digestive tract
Explanation:
when does a mutation affect the offspring?
Answers
Answer:
Mutations are only passed on to offspring when they occur in germ cell DNA
Explanation:
what are crows scared of
Answers
Answer:
Rattling and clanging sounds deter crows as much as reflected light. Distress signals. Play recorded distress calls of other crows to keep them at bay. Noisemakers and the sounds of fireworks are also a repellent.
Explanation:
Transcribe the DNA strand into
mRNA
Section it into its codons
Translate it into amino acids. TACTTTAGCGATACT
Answers
Answer:
AUGAAAUCGCUAUGT
Explanation:
T = A
A = U
C = G
G = C
Jane had two wind up clocks that had not been used for years. She decided to try them out, so she wound both, set the time, and started them at the same time. An hour later, clock A had gained one minute while clock B had lost two. The next morning clock A said 7 A.M. while clock B was at 6 A.M. What time was it when she started the clocks?
Answers
Right now, the clocks are one hour apart. The clocks are 3 minutes apart every hour. It would take 19 hours and 20 minutes to get from 6 A.M. to 10:40 A.M.
How to find a time?Right now, the clocks are one hour apart.
The clocks are 3 minutes apart every hour (A gains 1 - B loses 2)
Therefore, it would take 20 real hours for them to be separated by one hour.
Clock A advances by one minute per hour, moving 20 hours and 20 minutes throughout that time.
It would be 10:40 a.m. from 7 a.m. back 20 hours and 20 minutes.
Clock B advances by 2 minutes every hour, or 19 hours and 20 minutes, in a period of 20 hours.
It would take 19 hours and 20 minutes to get from 6 A.M. to 10:40 A.M.
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SOMEONE HELP ME ASAP
Answers
Answer:
B or d
Explanation: Diffrent events or colors can also show a pattern while sets of numbers can too
Which statement is FALSE?
There is evidence that the Bertillon System was used in ancient Egypt, India, and
China.
The Bertillon System was used in the United States and Europe before fingerprinting
replaced it
The Bertillon System is no longer used today by law enforcement
In the Bertillon System, sets of measurements were taken of each criminal, and
thought to be unique
Answers
Answer:
The statement that is false would be the third answer.
Explanation:
Sorry if this is wrong. I was doing my best.
Answer:
Option third is false.
Explanation:
Alphonse Bertillon in the later 18th century developed a system of solving crimes through a standardized process of bodily measurements, photographs, footprints, impressions, and thumbprints which created a unique identification of every criminal. The system gained popularity and acceptance in no time and various countries around the world accepted it as a part of law enforcement. Earlier, law enforcement was largely dependent on the Bertillon system to establish identity but with the advancement of science and introduction of fingerprinting this system was replaced by fingerprinting.Although, some of the methods of the Bertillon system are still part of the forensic methods of solving crimes while anthropometry was discarded.For more information:
https://brainly.com/question/8604576
Which of the following options does NOT affect the rate of diffusion?
1. the distance the molecules must travel to diffuse
2. the characteristics of the barrier that must be crossed for diffusion
3.the characteristics of the substance the molecules are traveling in
4.the temperature of the molecules
5.the surface area and thickness of the cell membrane across which diffusion is taking place
6.all of these options will affect the rate of diffusion
Answers
Answer:
4. ....... ...
Explanation:
look at the meaning of diffusion
1) Which letter indicates the most gradual change in temperature?
2) Which letter indicates the most sudden change in temperature?
Answers
Answer:
Don't know... sry .. But, I think I) C , 2) K
HELP ON THE WAY PLZ! what is the supplies we need to plant more trees or gardens? (NOT ARTS AND CRAFTS) I need 6 or more please! I just don't understand science....
Answers
Answer:
Dirt, water, sun, gloves, maybe pots and shovel
Explanation:
You can find videos all about this
Shovel
Hand rake
Garden hose
Compost
Seedlings
Water
Sunlight
Nutrient rich soil
Correct climate
I hope this helped I don’t completely understand the question. If it is in regards to planting forest or large groups we mostly need land and man power as well as rich soil so they can survive
These types of cells are found in the reproductive organs and are called?
Answers
Answer:
gametes should be the answer.
Explanation:
Answer:
gametes (GAH-meetz), are involved. The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female's reproductive system. When sperm fertilizes (meets) an egg, this fertilized egg is called a zygote (ZYE-goat).
Explanation:
Drag each item to the correct location to show when each occurred.
Answers
4. Explain the role played by non-governmental organizations in international environmental policy.
Answers
Answer:
★ They exert influence over international environmental policies
Explanation:
Hope you have a great day :)
