Answer:
Can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if a mistake is made as DNA copies itself during cell division.
Why does a larger quantity of water take longer to freeze ?
Answer:
If the water is initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may make hot water freeze faster than cold water in some cases.
Explanation:
Answer:
As the quantity of liquid is bigger it will take longer to freeze because more energy will have to be used. There is a state of matter that water has which is called super cooling this is where the water is at a freezing tempture but ice crystals haven't be formed correctly. Different liquids freeze at different temperatures. Water will freeze faster than liquids with salt or sugar in them. Some liquids freeze faster than others because of viscosity, or thickness of the liquid. Thicker liquids will freeze more slowly and some will not freeze at all.
Explanation:
Hope this helps!
Regions with otters tend to host dense forests of kelp, a brown seaweed that anchors to the seafloor. Kelp forests provide a physical structure in which diverse marine communities find shelter and food. Sea otters prey on urchins, which consume kelp. According to James Estes, sea otter populations have dropped dramatically in Alaska and the Aleutian Islands. If sea otter populations in these areas continue to decline, what might happen with populations of sea urchins and kelp
Answer: the urchin population will grow very large and the kelp will diminish
Explanation:
Answer:
the urchin population will grow very large and the kelp will diminish
Explanation: Also, reminder to drink some water, relax. You are LOVED! <3 :)
A food web shows how energy moves from one organism to another in an ecosystem. Students in a life science class created a diagram demonstrating a food web.
Based on the food web, which of these organisms receives its energy directly from a primary consumer?
Caterpillar
Dandelion
Frog
Grasshopper
Answer:
If you don't have a picture of the food web, I'm not sure but it's A or D
if you are hiking and find fossils, can you dig them up
Answer:
thanks for the points May God bless you always
When soil first forms over bare rock, what is it made of?
Answer:
Explanation:
Weathering and erosion produce ever smaller rock particles which,
when mixed with dust and decayed organic matter over time ,
result in different types of soil .
Soil is formed by the process of weathering. The soil is the uppermost layer of the surface of Earth. The first formed soil contains pieces of rocks and other particles.
What is Soil?Soil is the uppermost thin layer of material covering the earth's surface. It is formed from the weathering of large rocks. It is made up of mineral particles, organic materials, air, water and living organisms like bacteria.
The lichens are the pioneer species which invade the bare rocks and convert them into soil. They secrete acids which dissolve the rocks. This helps in their weathering and formation of soil. Mosses grow on the rocks along with the lichens to form a mat over the substratum.
Under the action of factors like heat, cold, rain, wind, and other atmospheric factors, the rock breaks down physically into the parent material of the soil.
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The vascular tissue of a plant transports various substances. Which substance would you expect to find in phloem, but not in xylem? a. Glucose b. Iron c. Potassium d. Water
While xylem transports water and mineral salts up from the roots to various parts of the plant, phloem transports sucrose and amino acids between the leaves and different parts of the plant. Thus, option D is correct.
What is the function of xylem and phloem?Water and dissolved minerals are distributed upward through the plant by the xylem, from the roots to the leaves. The phloem carries nutrients from the leaves to the roots.
The vascular cambium gives rise to xylem, vascular tissue that moves nutrients and water throughout the plant.
The vascular tissue known as phloem, which carries big molecules like sugar, develops outward from the vascular cambium. Increased xylem and phloem cells are produced when the vascular cambium cells divide.
Therefore, water is the substance that you expect to find in phloem.
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PLS HELP!!!
T:Have tail
t:no tail
-what percent of offspring will have a tail?-
Answer:
50 percentage
Explanation:
only the Tt will have a tail as they are hybrids and have the tail(T) as dominant characteristic
Metabolic acidosis can occur as a side effect of taking acetazolamide because: Select one: a. bicarbonate ions are wasted when sodium is excreted into the urine, leaving behind acidic metabolic waste products that need to be neutralized. b. chloride ions are wasted when sodium is excreted into the urine, leaving behind acidic metabolic waste products that need to be neutralized. c. bicarbonate ions are wasted when sodium is reabsorbed into the tubule as it attracts hydrogen ions. d. chloride ions are wasted when sodium is reabsorbed into the tubule as it attracts hydrogen ions.
Answer:
a. bicarbonate ions are wasted when sodium is excreted into the urine, leaving behind acidic metabolic waste products that need to be neutralized.
Explanation:
Metabolic acidosis is an electrolyte disorder characterized by a pH of less than 7.40 and low bicarbonate (HCO3) levels in the blood. This disease may be due to 1-an increasing acid production, 2-loss of HCO3 (which acts as an acid buffer agent), and 3- by a decreasing ability of the kidneys to maintain normal acid levels. The kidneys contribute to maintaining the acid–base balance by excreting hydrogen ions (H+) into the urine and absorbing HCO3 from the urine. In metabolic acidosis, kidneys are unable to remove enough acid and conserve sodium ions (Na+), which is normally done by excreting ammonia in the urine.
6. What is the complementary messenger-RNA sequence for the DNA sequence shown below?
(Helpful hints: RNA has U not T. Under the C, write a G, Under G write a C, under A write U, under the T write an A for adenine.
Portion of DNA: CAC ATT - write the complementary mRNA sequence below
Portion of mRNA:
What changes in the ecosystem will take place during secondary succession?
Explanation:
Secondary succession occurs as result of a disturbance that greatly alters an ecological community. Fires, storms, floods and removal of timber by humans can cause either the complete or partial destruction of vegetation. The availability of resources affects species diversity for each trophic level undergoing secondary succession.
What is the type of relationship between a rabbit and a leopard?
Answer:
Prey and Predator
Explanation:
rabbit is the prey and leopard is the predator
Answer:
Parisitism.
Explanation:
Im pretty sure the answer is parasitism because the Leopard would feed on the rabbit, meaning the leopard benifits while the rabbit would be harmed.
Which physical property of a medium is defined by how close the particles of the substance are to each other?
Answer:
The question is not complete as the options are not given, here are the options gotten from another website.
A) Crest.
B. trough.
C) density.
D) amplitude
The correct option is C.
Density.
Explanation:
This is because density of a particle is measured or define as the mass or weight of a particle divided by it's volume. This is a physical property which is determined through it's mass and volume, it illustrate how particles are closer or tend to move bearer to each other through it's mass and volume.
The human hands and feet have similar types and numbers of bones. However, hands and feet are very different in their appearance. What physical differences do you notice between the hands and feet? How might these differences relate to differences in the function of these body parts? Would you expect other primates to have hands and feet differently like this? Why or why not?
Answer:
Hands have a larger range of dexterity compared to feet. Longer tendins and stronger grip strength, they are made for more intrucite tasks such as making and using tools. Feet have a larger surface area, made for holding large amount of weight, shorter bones and tendins allow for easy acceleration and no extra flesh to get in the way. Other more primitive species will not have the feet we have due to evolution. They simply do not have the evolved sense of brain pwer hians haev in order to make tools. So they have more need for speed, grip exc. in feet to escape pradators and live day to day. Where on the other hand humans do not.
Explanation:
The metatarsals that can be found in the foot are larger than the metacarpal bones that are in the hands.
It should also be noted that the phalanges of the hand are larger than that of the foot. The way that the metacarpal of the thumb is built is vital for mobility and movement.
Primates have hands and feet that are different from that of humans because they use their hands and feet for grasping. They also have strong clavicles and flexible shoulder joints. This enables them to climb and grasp things firmly.
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Which of the following ALWAYS contains organic carbon?
O A. carbon compounds in certain rocks
O B. carbon compounds in the atmosphere
C. carbon compounds in ocean water
O D. carbon compounds in living organisms
can someone help me with this immediately!!!!!! and don’t guess or leave a link. i’ll be marking brainiest if u give me the correct answer
the second one
the liver produces bile to help break down food particles
Answer: B
Explanation: because bile is produced by the liver and helps absorb fat
identify the type of blood vessels that artherosclerosis will affect. Why is it important that these blood vessels be elastic and flexible?
Answer:
Atherosclerosis affects arteries, these blood vessels are elastic and flexible in order to allow good blood circulation
Explanation:
The blood vessels are classified into three types: arteries, veins, and capillaries. An artery is a muscular blood vessel that is able to carry blood away from the heart to different parts of the body. Healthy arteries need to be elastic and flexible in order to adjust their diameter and thus control blood flow by maintaining blood pressure. Arteriosclerosis is a chronic disease caused by the accumulation of fatty substances (especially cholesterol) in the artery walls, thereby difficulting blood circulation by thickening and hardening these walls.
The nucleus contains genetic information which controls and gives the cell _________________ about what to do.
Answer:
please give me brain list and follow
Explanation:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
What are the collecting chambers of the heart? What are the pumping chambers of the heart?
What are the collecting chambers of the heart? What are the pumping chambers of the heart? The heart is made up of four chambers. The upper chambers are the called atria and act as the receiving chambers. There are four valves within the heart, which help control the direction of blood flow. Blood low in oxygen returns from the body and enters the right atrium. The lower chambers are called ventricles; these are the pumping chambers. I really hope this helps!! Have an amazing day <3
the earth requires 24 hours for one rotation. so in 24 hours how many longtitudes will face the sun?
Answer:
The sun would observe 15 degrees of earth's longitude.
the female part of the plant is called the
A. stamen
B. pistil
Answer:
B
Explanation:
Answer:
the correct answer is B. pistil
Precipitation in Jacksonville (1961-1990
True or false
Answer:
your answer is true I believe
Answer:
True it is the precipation in Jacksonville 1961 to 1990
what do we call the actual gas or substance that causes air pollution?
Answer:
The actual gas that causes air pollution is called a pollutant
Explanation:
Air pollution is the decrease in air quality. Air pollutants are the gases that cause air pollution.
What are pollutants?Pollutants are harmful substances and particles that affect the quality of the environment and are man-made or natural. Fly ash from volcanic eruptions is a natural pollutant that deters the air quality.
The air pollutants like carbon monoxide, sulfur dioxide, and carbon dioxide released from the burning of fossil, coal, and vehicles alter the air quality and result in a change in weather conditions.
Therefore, the pollutants are the actual gases that cause air pollution.
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The picture above shows some of the organs of the human body. Which organ does the letter W point to?
A.
liver
B.
pancreas
C.
lung
D.
heart
Which is a characteristic of something in the domain archaea?
A: Can not live in an extreme environment
B: Multicellular
C: membrane-enclosed organelles
D: No cell nucleus
What type of cells are produced at the end of meiosis?
Answer:
haploids i think
Explanation:
sorry if its wrong!
Question 2 of 6 Which two pieces of data could indicate that a volcano is about to erupt? A. An increase in temperature near Earth's surface B. A change in the types of gas detected in the air OC. A drop in average air temperature in one region D. A decrease in the ocean level near a mountain range.
HELPP ME PLZZZZ
Answer:
A is the correct answer.
What can the scientists most likely expect to find in the layers of rock that are about the same age as the impact?
The correct answer to this open question is the following.
Although you forgot to include the context of the question and the options to answer it, we can comment based on our knowledge of this topic.
What scientists most likely can expect to find in the layers of rock that are about the same age as the impact is evidence of a gradual change of one species over time.
This question has to have the following context. Scientists found evidence of a large meteor impact on the coast of the Yucatán Peninsula in Mexico.
Scientists, researchers, and geologists use special methods to date rocks and fossils on planet Earth. In this case, they have used a method called radiometric dating. These methods are based on radiation. Yes, they use the natural radioactive decay of potassium, carbon, and other elements to get to the most exact date on when things happened. In this case, the time of the meteor impact on the Yucatán Peninsula in southern México.
Select the false statement about the effect of lymphopenia on the immune response following administration of immunosuppressive drugs like the corticosteroids. Select one: a. The immunosuppressive effect (lymphopenia) occurs 4 to 6 hours following drug administration and significantly reduces the number of circulating lymphocytes in the blood. b. Lymphopenia decreases the ability of lymphocytes to initiate and participate in an immune response. c. Corticosteroids increase the amount of lymphoid tissue and cells in the lymph nodes and spleen. d. None of these are false.
Answer:
The correct answer is option C (Corticosteroids increase the amount of lymphoid tissue and cells in the lymph nodes and spleen).
Explanation:
Lymphopenia occurs when the white blood cell count in the bloodstream of an individual that defends the body from a harmful attack is lower than normal this could be due to different reasons, maybe the body has been previously invaded by viruses, bacterias or diseases that have already weakened the immune system, or the body is under siege from a prolonged illness. The white blood cell counts may be very low or severe which rightly indicates all is not well with the body.
Corticosteroid drugs are usually used to treat inflamed areas of the body and they cause those special defensive white blood cells in the blood cell count to be channeled effectively to the bone marrow.
White blood cells, bone marrow, spleen, are examples of lymphoid tissue and cells which support the way the immune system responds to attack.
Corticosteroids don't increase the amount of lymphoid tissue and cells in the lymph nodes and spleen when immunosuppressive drugs like corticosteroids are used for individuals with lymphopenia.
What happens when an electric charge moves?
Answer: The movement of a static charge out of an object is known as static discharge. When a charge moves, it transfers energy that can be used to do work. ... The attraction of the unbalanced electrons in the first object to the unbalanced protons in the second object can cause the electrons to move to the second object.
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50 POINTS AND BRAINIEST
what happens if public libraries do not obey the federal law?
Answer:
A library will not receive federal funds.
Explanation: