Answer:
Explanation: The Exxon Valdez oil spill was a manmade disaster that occurred when Exxon Valdez, an oil tanker owned by the Exxon Shipping Company, spilled 11 million gallons of crude oil into Alaska’s Prince William Sound on March 24, 1989. It was the worst oil spill in U.S. history until the Deepwater Horizon oil spill in 2010. The Exxon Valdez oil slick covered 1,300 miles of coastline and killed hundreds of thousands of seabirds, otters, seals and whales. Nearly 30 years later, pockets of crude oil remain in some locations. After the spill, Exxon Valdez returned to service under a different name, operating for more than two decades as an oil tanker and ore carrier.
On the evening of March 23, 1989, Exxon Valdez left the port of Valdez, Alaska, bound for Long Beach, California, with 53 million gallons of Prudhoe Bay crude oil onboard.
At four minutes after midnight on March 24, the ship struck Bligh Reef, a well-known navigation hazard in Alaska’s Prince William Sound.
The impact of the collision tore open the ship’s hull, causing some 11 million gallons of crude oil to spill into the water.
At the time, it was the largest single oil spill in U.S. waters. Initial attempts to contain the oil failed, and in the months that followed, the oil slick spread, eventually covering about 1,300 miles of coastline.
Investigators later learned that Joseph Hazelwood, the captain of Exxon Valdez, had been drinking at the time and had allowed an unlicensed third mate to steer the massive ship.
A student wanted to determine the evaporation rates of three liquids. She placed 50 mL of each
liquid outside for an hour on the same day and then measured how much liquid evaporated. Which
would improve the validity of this investigation?
A. Put all three liquids outside at the same time
B. Have 2 students work
Ctogether on the investigation
Change the time for Liquid 3 to 7:00–8:00 PM
he amount of liquids used
Answer: I believe its C
Explanation: 2 and 3 are the same times
Its better to change the time to get different results.
plant a is placed in a room by the window and plant b is placed on the open field. assuming all other factors remain constant (same amount of carbon dioxide and water), which plant will have a higher rate of photosynthesis? why? explain your answer.
Answer:
plant B
Explanation:
This is because plant B is exposed to more sunlight which is essential in photosynthesis.
so the chlorophyll is able to trap more sunlight. which will make it have a higher rate of photosynthesis.
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lizard is a poikilothermic animal why
Answer:
Lizard is a poikilothermic animal because lizards are those animals that do not require a fixed body temperature, their temperatures can fluctuate with little to no adverse effects to their overall health.
Explanation:
Reptiles are cold-blooded, or ectothermic, animals. This means that they cannot produce heat in their own bodies, and have to rely on their surroundings to keep warm. By moving in and out of sunlight, reptiles can keep their body temperature at a steady level throughout the day.
Process occurs in the
mitochondrion. Produces CO2
Explain how the slow recovery of the bald eagle population likely affected the recovery of the salmon population
Answer:
Because if there is not many bald eagles around to hover on top of the water and hunt this gives an opportunity for the salmon population to expand without be constantly hunted
Entre las células, aquellas que presentan cloroplastos con clorofila pueden ser catalogadas como...… A) ...Heterótrofas B) ...Carnívoras C) ...Autótrofas D) ...Herbívoras
Respuesta:
La respuesta correcta es: C) Autótrofas.
Explicación:
La clorofila es un pigmento verde que se encuentra en las cianobacterias y en células vegetales, dándoles a las plantas y algas su característico color. Se encuentra dentro de los cloroplastos.
La clorofila es una molécula de muchísima importancia para llevar a cabo la fotosíntesis, un proceso clave en la vida de las plantas y cianobacterias, ya que es la forma en la que obtienen los nutrientes que requieren para su supervivencia. El hecho de realizar fotosíntesis es lo que convierte a estos seres vivos en autótrofos, lo que significa que elaboran su propio alimento orgánico a partir de sustancias inorgánicas.
Genetic evidence supports the idea that all organisms are related. This is because:
A) Some organisms have a DNA and some do not
B) Each organism has DNA made from different molecules
C) Each organism on Earth has DNA made from the same nitrogen bases in different sequences
D) Every organism on Earth has the same nitrogen bases in their DNA
1. The role of bacteria in the carbon cycle is _________________
(a) breakdown of organic compounds (b) respiration
(c) absorption of nitrogen compounds (d) photosynthesis
Answer:
breakdown of organic compounds
Explanation:
Bacteria are responsible for maintaining the conditions of life as the earth by virtue of their powers of decomposition of plant and animal bodies by which the limited supply by C02 available for photosynthesis is replenished. Thus, they act as decomposers in the carbon cycle.
Which of the following are not marsupials? a. kangaroos. b. koalas. Opossums. d echidnas. Please select the best answer from the choices provided?
Answer:
echidnas
Explanation:
echidnas is not marsupials because it is a spiny insectivorous egg- laying mammal with a long snout and claws , native to Australia and New Guinea.Imagine carefully weighing a metal can, leaving it out in the rain for weeks and weeks until it was very rusted, and then carefully weighing it again. Would the can be heavier or lighter after it was rusted?
Answer:
The answer would be heavier, though it depends upon the type of metal. Rusting is essentially corrosion. Rust is often caused by a piece of metal getting soaked in water and then being exposed to oxygen. The rust will add more weight to the can so it becomes heavier.
Leaving out metal can in the rain for weeks and weeks until it was very rusted, and then if we carefully weighing it again it can be found that the can weighs more because the rust deposited on the metal can adds more weight.
What is rust?
Rust is referred to as an iron oxide, and a form of corrosion which is caused by a chemical reaction which affects masses of iron and steel.
Once formed, rust starts to eat away at the metal, forming a flaky, orange red coating which weakens the iron. It occurs when the metal reacts with oxygen and water.
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Maintaining a healthy lifestyle though diet and exercise is important
What did the countries that signed the Kyoto Protocol agree to do?
O A. Stop using CFCs
O B. Stop depleting the ozone layer
O c. Reduce greenhouse gas emissions
O D. Ban CO2 use
Answer:
C
Explanation:
The countries that signed the Kyoto Protocol agreed to reduce greenhouse gas emissions (C) particularly carbon dioxide emissions, in an effort to combat climate change.
What is Kyoto protocol?The Kyoto Protocol is an international treaty under the United Nations Framework Convention on Climate Change that was adopted in 1997 in Kyoto, Japan (UNFCCC). The treaty seeks to address the issue of global climate change by establishing targets for reducing greenhouse gas emissions, specifically carbon dioxide emissions, from industrialized countries.
According to the Kyoto Protocol, developed countries must reduce their emissions by an average of 5.2% below 1990 levels by 2012. The protocol has been ratified by 192 countries, and signatories have implemented a variety of policies and strategies to meet their emissions reduction targets, including increased energy efficiency, increased use of renewable energy sources, and the implementation of emissions trading systems. The Kyoto Protocol is a significant step forward in terms of international cooperation and action on the critical issue of climate change.
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Which muscle is highlighted below?
A. Obliques
B. Biceps brachii
C. Rectus abdominus
D. Latissimus dorsi
Answer:
A. Obliques
Explanation:
Those are oblique muscles. Biceps brachii are in your upper arm, rectus abdominis are your abs, latissimus dorsi is in your upper back (very big muscle)
Answer: obliques
Explanation:
took the quiz
(trust me ignore the comments on the other answer)
The following includes the steps that should be taken when blood is found at a crime scene EXCEPT
Answer:
confirm the point of origin
Las células en los tejidos epiteliales están fuertemente unidas a la lámina basal. ¿Qué tipo de proteínas están involucradas en este tipo de unión célula-matriz?
Answer:
integrinas y lamininas
Explanation:
Las integrinas son glucoproteínas implicadas en el anclaje de las células epiteliales a la matriz extracelular. Las células epiteliales tienen en su base proteínas integrinas que se unen a otras proteínas tales como vitronectina, fibronectina, colágeno y laminina. De este modo, las integrinas se asocian con lamininas de la lámina basal. Las lamininas son otra clase de glucoproteínas las cuales conforman la lámina basal y contienen sitios de unión para integrinas. A partir de esta asociación las células epiteliales pueden adherirse a la membrana basal y mantener su orientación dentro de un tejido. Estas uniones son fundamentales para que las células epiteliales puedan soportar fuerzas y son críticas durante el desarrollo apropiado (ontogenia) del organismo.
Global warning is most closely associated with
Answer:
Fossil fuel
Explanation:
Human usage of fuel
Fill in the information missing in the table to the
right by selecting the appropriate answer from the
drop-down menu.
A
Carbo-
Nucleic
Lipids
Proteins
hydrates
Acids
store surround transport,
energy, and protect
provide
carry genetid
information
provide cells structure
determine
support regulate and support,
the structure
and
cell
help
of proteins,
А functions, chemical
insulate the reactions
and help
build
body, and happen, and
B
с
proteins
B
Function
С
D
E
Example
D
fats, oils
hemoglobin
E
DONE
Intro
D
Answer:
A
Explanation:
Because yea
Coal is made almost entirely of which chemical element?
Group of answer choices.
A. mercury
B. carbon
C. uranium
D. sulfur
Answer:
B- Carbon
Explanation:
just took test
The half-life of a material increases with the amount of material present.
Please select the best answer from the choices provided
OT
OF
Answer:
t
Explanation:
.......
what animal has the longest lifespan?
Answer:
Ans.The longest living mammal is the bowhead whale, which can live up to 200 years. Also known as the Arctic whale, this animal is big, and lives in cold waters so its metabolism is slow. The record age for bowhead is 211 years.
Some endoliths have lifespan as long as 10000years.
Name one of the people who's work contributed to Darwin's Theory of Natural Selection. In 2-4 sentences discuss that individuals work. In another 1-2 sentences who did that individuals work contribute/ relate to Darwin's Theory.
Explanation:
everything can be found in the picture
Attached earlobes are a recessive trait in humans. In the tree below, people
with attached earlobes are shaded in. Which best describes the person
labeled X in the tree?
A. A female with no recessive alleles
B. A male with no recessive alleles
C. A male with one recessive allele
D. A female with one recessive allele
Answer:
It would be C
Explanation:
If you look at the tree you can see that one of the male's parents had the recessive allele, and one of the siblings has the ressive allele, the means the male could have the trait but isnt showing it.
A male with one recessive allele describes the person labeled X in the tree.
What is Recessive allele?
In terms of genetics, the term "recessive" describes the connection between an observed trait and the two inherited forms of a gene associated with that feature.
Each gene has two alleles that an individual inherits from each parent. When a characteristic is recessive, both of the (recessive) alleles of the gene that causes the trait must be present for the trait to manifest.
When there is only one copy of an allele, it has no effect at all. This is in contrast to a dominant trait, which can only be expressed when one of the two alleles is present.
Therefore, A male with one recessive allele describes the person labeled X in the tree.
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Athletes require energy to move their body. What biomolecules directly supplies your muscles with quick energy, or ATP, when broken down?
Creatine phosphate directly supplies muscles with quick energy, or ATP, when broken down.
Creatine phosphate is a phosphorylated creatine molecule. Muscles use stored chemical energy from the food we eat and convert it to heat and kinetic energy. Adenosine triphosphate is the source of energy used to power the movement of contraction in working muscles. However, ATP is not stored in large amounts in cells. So once muscle contraction begins, the process of making more ATP starts quickly. The muscle has three biochemical systems to produce more ATP for muscle contraction. One such biochemical system utilizes creatine phosphate. Muscles have a little ATP in them that they can use immediately but it does not last long. So, all muscle cells have a high-energy compound called creatinine phosphate which is broken down to form ATP quickly.
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What effect do biological washing powders have on the skin?
Answer:
Biological washing powder and liquids contain enzymes. These help to break down fat, grease and proteins to get clothes clean. While enzymes are great for getting rid of stains, they can damage wool, silk and other materials. Many people also find that they aggravate eczema and other sensitive skin conditions.
Explanation:
Answer:
The hysteria surrounding biological detergents in the UK led to claims that it can lead to or exacerbate such conditions as “erythema, pruritus and eczema.” Despite this, the review finds no evidence of any harmful effects to skin from bio washing powders and detergents
Which statement describes how osmosis is a significant part of sexual reproduction
Answer:
k
Explanation:
SERE
Explain how using non-local resources has affected the United States both environmentally and economically.
Answer: Possible economic consequences of using non-local resources include increased costs of resources, loss of jobs, increased security risks, and a trade deficit.
Explanation:
Hope it helps you if not sorry
Sample Answer:
Possible environmental consequences of using non-local resources include the risk of oil spills as oil is transported over waterways, increased air pollution from water and land transportation of resources, and habitat loss that comes from pipeline construction and other infrastructures. Possible economic consequences of using non-local resources include increased costs of resources, loss of jobs, increased security risks, and a trade deficit.
Explanation:
In translation, which of these is responsible for forming a peptide bond? Choose the correct answer.
DNA
tRNA
nucleus
ribosome
Be a Lunatic
What are the moon's craters caused by?
volcanic eruptions
collisions with asteroids
collisions with Earth
collisions with ultraviolet radiation
A boxer has been jumping rope for an hour. His leg muscles are burning and
he feels weak. Which substance is the most likely
cause of the burning he
feels in his muscles?
Answer:
anaerobic respiration takes place when you demand your muscles to do vigorous work. normally, aerobic respiration takes place but when energy is needed immediately, anaerobic respiration takes place. during anaerobic respiration,the body produces lactic acid, which leads to the burning sensation. your lungs deliver oxygen to the muscles much slower than the rate you need, since you're putting your muscles through an extensive exercise, and this leads to muscle fatigue.
Which of the following practices does NOT help to conserve the environment?
Overgrazing
Crop rotation
Reafforrestation
Using natural fertilizers
Answer:
over grazing is the answer
