3 plz help if you can its worth 11 points+
Select the correct answer.
A population of lizards lived in an ecosystem that was prone to flooding. After many generations, most of the lizards in the population had longer legs than their ancestors, which helped them flee from floods. Which statement best explains this change?
A.
The lizard genes spontaneously mutated to address the flooding threat.
B.
Genetic variation among lizard limbs allowed for natural selection to occur.
C.
The limbs were artificially selected because humans probably caused the flooding.
D.
The lizards with longer limbs cloned themselves, ensuring survival of the species.
Answer:
b
Explanation:
this is correct bc it shows that although a mutation occurred, it happened over time, and so now, the lizards attained a new adaption which allows them to avoid the floods
Hope this helps!
what is the meaning of structure?
Answer:
the word 'structure' in biology has the following meaning;
"An arrangement or organization of parts to form an organ, system, or living thing"
Molecules that contain carbon are known to be ______________ molecules.
Answer:
organic molecules
Explanation:
organic molecule is composition of carbon atoms and hydrogen atoms.
in chemistry we study about an organic chemistry where we mainly study about the carbon and hydrogen.
An oak tree can be a home for animals like squirrels, birds, etc. as well as provide oxygen for the environment. This is an example of a _____________: the role an organism plays in the environment.
Answer choices:
A. Understudy
B. Lead
C. Niche
Answer:
C
Explanation:
A Niche is the role an organism plays in its environment.
Answer:
C
Explanation:
B and T cells of the immune system have unique B and T cell surface receptors (respectively) as shown above. What is the function of the variable and the constant regions of the B and T cell receptors of the vertebrate immune system? A) There will be an increase in inflammatory response during an innate immune response. B) There will be a decrease in allergic responses on the part of the individual to allergens in the environment. C) There will be an increase in variety of the shape of the B and T cell receptors, allowing them to recognize and destroy more pathogens. D) There will be a decrease in pathogens that can enter the body, resulting in a decrease of antibodies present and circulating in the blood.
Answer:C. There will be an increase in variety of the shape of the B and T cell receptors allowing them to recognize and destroy more pathogens
Explanation: usa test prep
Answer:C
Explanation: Because I did the USA test prep
explain the difference between weathering and erosion? how is deposition also involved in this three step cycle?
Answer:
Erosion is the process by which natural forces move weathered rock and soil from one place to another. ... Deposition occurs when the agents (wind or water) of erosion lay down sediment. Deposition changes the shape of the land. Erosion, weathering, and deposition are at work everywhere on Earth
Explanation:
because thanos said so
Which characteristic makes fungi similar to plants?
Answer:
They are both non-mobile and eukaryotic.
Explanation:
Plants and fungi both remain stationary. They do not move around for their food. Another similarity is that they both are made up of eukaryotic cells, meaning they contain a nucleus.
Answer:
While both are eukaryotic (both have nucleus) and don't move, plants are autotrophic, making their own energy - and have cell walls made of cellulose, but fungi are heterotrophic, taking in food for energy (so they eat dead and decaying food), and have cell walls.
Explanation:
Hope this helps!
What is a human genome sequence?
Answer:
The human genome is the complete set of nucleic acid sequences for humans, encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria. These are usually treated separately as the nuclear genome, and the mitochondrial genome.
A model of a gene, DNA, and a chromosome is shown here. A researcher tags the gene with a heavy radioactive isotope (P-32). Which statement predicts the outcome of the radiolabeling on the gene, DNA, and chromosome while differentiating between the three components of the model?
Answer:
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes
Explanation:
Genes are made of DNA, but there are many (numerous) genes found along chromosomes. Only a small portion of the chromosome will be radiolabeled.
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
What is the relationship among DNA a gene and a chromosome?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Thus, The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
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A fossil found inside a rock formation shows an organism with evidence of
lungs, scales, and fins. Scientists believe that the fossil represents an
intermediate species between sea and land animals. How can this fossil
BEST be used to study this species? *
Answer:
By studying its bone structure u can learn a lot about how the organism lived and moved.
Explanation:
(Brainliest?)
How does your heart rate affect the rate at which red blood cells travel throughout your body? PLEASE HELP ME QUICK!!
Answer:
with each heartbeat,the heart pumps blood throughout our bodies,carrying oxygen to every cell,after delivering oxygen the blood returns to the heart the heart then sends the blood to the lungs to pick up more oxygen.
How do hormones relate to the estrous cycle?
Answer:
Estrous cycles give females repeated opportunities to become pregnant throughout their productive lifetime. The cycle is regulated by the hypothalamic-pituitary-gonadal axis, which produces hormones that dictate reproductive events.
Explanation:
Give an example of the law of conservation
of mass.
If a new species of honeycreeper were discovered, and it had a short, straight beak, which bird in this puzzle would likely be its closest living relative?
Answer:
The bird species that share the closest phenotypic characteristics are likely closest relatives.
Explanation:
Evolution theory states that species evolve gradually trough mutations (many of them are neutral), thereby those honeycreeper populations closest are more likely to share phenotypic features with each other.
Answer:
Po'oull
Explanation:
Which of these would increase the carrying capacity of a prairie dog habitat?
O
A. Increased population density
O
B. Increased human conservation activities
O
C. Increased agricultural development
O
D. Increased competition for food
Answer: B. Increased human conservation activities.
Answer:
Increased Human conservation activities.
Explanation:
AP3X
Which of the following infectious disease agents is the smallest? A Bacteria B Virus C Fungus D Parasite
Answer:
B. Virus
Explanation:
With the exception of Virods and Prions, viruses are the smallest infectious disease agents.
After viruses, bacteria are the smallest, then fungi, and lastly parasites.
Answer:
virus
Explanation:
Body systems in the human body work together to support the essential life functions of the body. The urinary system interacts with the cardiovascular system in several significant ways. Which of these is NOT an accurate interaction between the two body systems?
A) The kidneys secrete an enzyme called rennin that helps control blood pressure.
Eliminate
B) The kidneys filter metabolic waste products and toxins from blood for excretion from the body in urine.
C) The kidneys excrete a great amount of sodium and water helping control sodium concentration and blood pressure.
D) The kidneys secrete erythropoietin, a hormone which stimulates the production of white blood cells in the body.
Answer:
a
Explanation:
the kidney secretes an enzyme called rennin that helps to control blood pressure is not true the kidney does not secret rennin
Which of the following would best serve to repair the stratosphere ozone layer
How do the data that Samantha obtained help explain the way that the body maintains homeostasis during exercise? Include the activities of at least three body systems in your explanation.
Answer:
the way that the body maintains homeostasis during exercise is the removal waste product such as carbon dioxide gas which is produced during cellular respiration.
Explanation:
During exercise, the body needs more oxygen and nutrients. For this purpose, energy is released in the process of cellular respiration. The product of cellular respiration the generation of energy in the form of ATP and carbon dioxide gas. ATP is used by the body while carbon dioxide is removed from the body during breathing. During exercise, the glucose is provided by the digestive system to the mitochondria of the cell and the waste product is removed through respiratory system of the body while the circulatory system sends energy molecules where it is needed in the body and carbon-dioxide to respiratory system for removal.
A(n)
is an organism that breaks down dead organisms and
Answer:
Decomposer
Explanation: I just did it
An organism that breaks down dead organisms and decomposes is called a decomposer, and the decomposer takes part in the decomposition process by breaking down the dead and mixing with soil.
What is the decomposer's importance?Decomposers are of great importance as they can maintain the ecosystem by breaking down dead organic matter and recycling nutrients back into it, later, these nutrients are passed from the environment to plants, then to animals, and then back to the environment. Decomposers include bacteria and fungi that consume dead plant and animal material, breaking down complex molecules into simpler compounds that can be used by plants to grow.
Hence, an organism that breaks down dead organisms and decomposes is called a decomposer, and the decomposer takes part in the decomposition process by breaking down the dead and mixing with soil.
Learn more about the decomposer here.
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Red squirrels and gray squirrels have been the native species on an island for many years. A few years ago, black squirrels entered this island. The black squirrel is an invasive species. Invasive species aren't native to the ecosystem. They move into an ecosystem because of natural changes or human intervention. Red squirrels and black squirrels have identical food requirements, but gray squirrels have a different diet. What three effects will these events have on the island's squirrel population?
Answer:
1. There will be direct predation of species.
2. There will be competition for limited resources like breeding sites, prey.
3. Transmission of diseases or they can cause danger to the native species.
Explanation:
Invasive species are species of organisms that are not natural to an ecosystem and move to an ecosystem because of natural changes and human intervention. Islands are prone to the invasion of invasive species because they don't have predators and there is no competition that control populations in their ecosystem. The invasion of black squirrels will lead to competition for limited resources like breeding sites or prey, the black squirrels will begin to predate other squirrels because they have different nutrients requirements and they can transmit diseases to other squirrels if they are carrier.
Answer:
B C D
Explanation:
GOT IT RIGHT ON PLATO
Which traits would Aristotle have used to classify sharks? Choose more than one answer.
Answer:
The main trait that was different between sharks 14 and 9 was that shark 14 (Mobulidae) has a front with two points that look like horns, whereas shark 9 (Dasyatidae) has a front with no points that look like horns.
Explanation:
The traits that Aristotle would have used to classify sharks are :
Front with points ( hornlike )Front without points Sharks classificationSharks whose front have two points like horns are classifed by Aristotle as sharks 14 (Mobulidae). whlie sharks whose front does not have two points like horns are classifiesd as sharks 9 ( Dasyatidae ). hence the traits that would have been used by Aristotle to classify sharks is the presence of points at the front.
Hence we can conclude that the traits that Aristotle would have used to classify Sharks are Front with points and front without points.
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Ja’ron lives near a river that flows through farmland. He notices that the river has become more polluted over the years. The water that was once clear is now sometimes cloudy and has an unpleasant odor. What is the most likely cause of the pollution in the river? A. heat B. oil and gasoline C. industrial wastes D. pesticides and fertilizer
Answer: pesticides and fertilizer
Explanation: He lives in an area of farm land so, big crops are grown and to keep the bugs off the plants, farmers use pesticides. Then what happens is when it rains, the excess runs off into the river and pollutes it.
Keith and Marsha's only child to have a carrier genotype, Jeff, did marry. Cedric remained single due to poor health, and Nita swore off marriage after several bad relationships. Jeff and his wife Adrienne had four children, Angela, Keith, Joyce, and Denise. Although the parents were not expecting it to happen, their only son and their second born girl were born with sickle cell disease. Post- pedigree questions: If you were Ketih and Marsha's genetic counselor, what would you tell them? _____________________________________________________________________________________ Which of the Jackson's grandchildren are definitely carriers? _____________________________________________________________________________________ What is Adrienne's genotype? ________________________________
Answer:
Answer to Question 1:
Sickle cell anemia is a recessive disorder. The fact that one of their children is a carrier means that either of Keith and Marsha is a carrier ot it might be that both of them are carriers of the disease.
Answer to Question 2:
The other two kids of Jeff and Adrienne who don't have the genetic disease are still carriers of sickle cell anemia.
Answer to Question 3:
Adrienne is a carrier of the sickle cell anemia disease as well, just like Jeff.
Hope that answers the question, have a great day!
Which of the following year graphs represent hours of daylight and solar energy at 45° S?
Answer:
The answer is D
Explanation:
Which characteristic of life distinguishes a fire in flowering plant
Answer:
The use of energy is a life characteristic that distinguishes fire from a flowering plant. EXPLANATION: When fire is put on, it makes use of oxygen and releases carbon dioxide and other gases.
Explanation:
What is the complementary DNA strand that is created from this
template during replication?
A template strand of DNA is 3' GATCCAAAATGT 5'.
-5 GATCCAAAATGT 3'
-5' CUAGGUUUUACA 3'
-5' CTAGGTTTTACA 3'
-5' TCGAACCCCGAG 3'
blood type can receive Rh+ or Rh- blood
Answer:
People with Rh- blood can give blood to both Rh- and Rh+ recipients. However, those with Rh+ blood cannot give to Rh- recipients. If a person receives blood from someone with an incompatible blood type, it can cause a life threatening immune system reaction.
Answer:
Have a nice day.
Explanation:
Which of the following are examples of short-term, human-induced environmental changes? Select three answer choices.
mass extinction
global warming
deforestation
ozone layer destruction
pollution
Answer:
deforestation
pollution
mass extinction
Explanation:
all three caused by humans
Answer:
mass exinction, deforestation, pollution
Explanation:
explain how gas is changed back into gas when it exits the barrel
