Base your answer on the information below. A decade after the Exxon Valdez oil tanker spilled millions of gallons of crude [oil] off Prince William Sound in Alaska, most of the fish and wildlife species that were injured have not fully recovered. Only two out of the 28 species, the river otter and the bald eagle, listed as being injured from the 1989 spill are considered to be recovered said a new report, which was released by a coalition of federal and Alaska agencies working to help restore the oil spill region. Eight species are considered to have made little or no progress toward recovery since the spill, including killer whales, harbor seals, and common loons [a type of bird]. Several other species, including sea otters and Pacific herring, have made significant progress toward recovery, but are still not at levels seen before the accident the report said. More than 10.8 million gallons of crude oil spilled into the water when the tanker Exxon Valdez ran aground 25 miles south of Valdez on March 24, 1989. The spill killed an estimated 250,000 seabirds, 2,800 sea otters, 300 harbor seals, 250 bald eagles, and up to 22 killer whales. Billions of salmon and herring eggs, as well as tidal plants and animals, were also smothered in oil. Reuters The oil spilled by the Exxon Valdez tanker is an example of ______________.
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.
When is DNA replicated?
during mitosis
immediately before cytokinesis
GO phase
S phase
Answer:
S phase
Explanation:
DNA replicates in the S phase of the cell cycle and initiates at specific regions in the DNA sequence known as DNA replication ‘origins’. A number of proteins participate in DNA replication and the process is subject to scrutiny by cell surveillance mechanisms called cell cycle checkpoints.
Answer:
d
Explanation:
Ivy grows specifically on stone walls, what type of response is this?
A. Hydrotropism
B. Thigmotropism
C. Phototropism
D. Geotropism
Answer:
B. Thigmotropism
Explanation:
Thigmotropism is a directional growth movement which occurs as a mechanosensory response to a touch stimulus. Thigmotropism is typically found in twining plants and tendrils, however plant biologists have also found thigmotropic responses in flowering plants and fungi.
Answer:
B. Thigmotropism
Explanation:
The ivy grows specifically on stone walls, it shows Thigmotropism.
How do I calculate Ph?
Explanation:
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].
2 Pretest Unit 2
Question 10 of 30
What bases are found in a DNA molecule?
A. Adenine, guanine, cytosine, and thymine
B. Adenine, guanine, cytosine, and uracil
O
C. Nucleotide and nitrogen
O
D. Phosphate and pyrimidine
SUBMIT
Answer:
a
Explanation:
i looked it up
The molecules found in the DNA and RNA are adenine, quinine, cytosine, and thymine. Therefore option “A” is correct.
What are nucleotides?Nucleotides are the main constituents of DNA and RNA. The chemical structure of nucleotides is pentose sugar, nitrogenous base, and phosphate bonds. The nitrogenous bases are of two types purine and pyrimidine. Pyrimidine bases are cytosine, uracil, and thymine whereas adenine and guanine are purines. In DNA, deoxyribose pentose sugar is present whereas in RNA ribose pentose sugar is present.
The phosphate bond in nucleotide is an energy-rich ester bond. When the nitrogenous base is attached to the pentose sugar the structure is known as a nucleoside. When a nucleoside attached to the phosphate group is known as the nucleotide.Adenine bonds with thymine with two bonds where as cytosine bonds with guanine with three bonds.
Hence, a nucleotide is the functional unit of DNA and RNA.
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Which phyla move by using pseudopodia?
A.Sarcodina
B.Rhodophyta
C.Chlorophyta
D.Euglenophyta
Answer:
A) Sarcondina
Explanation:
They are the only type of phyla which move with pseudopodia.
The phylum that moves by using pseudopodia is Sarcodina, which is in option a. Sarcodina is a phylum within the kingdom Protista, so here the correct sequence is option a.
Amoebas in the phylum Sarcodina move and capture their prey by extending and retracting temporary extensions of their cytoplasm called pseudopodia. These pseudopodia allow amoebas to change their shape and move in a crawling-like manner. Rhodophyta refers to the phylum of red algae, which typically have a complex cell structure but do not move by pseudopodia. Chlorophyta refers to the phylum of green algae, which often have flagella or other specialized structures for movement, but not pseudopodia. So here the correct sequence is option a.
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Te
а.
Which of the following is a way that scientific advancements have benefited society?
increased energy efficiency
Б. increased resource use
increased urbanization
d changes in the global climate
C.
Please select the best answer from the choices provided
Mark this and return
Save and Exit
Next
Submit
Answer:
Б. increased resource use
increased urbanization
How many acres of land do you think were required for all forms of food except
beef?
A. 20,475 acres
B. 45,510 acres
C. 105,000 acres
D. 410,505 acres
according to this time table a train --------- at 3 o'clock .A will leave .B is leaving C. is going to
Answer:
is going on is your answer
which scenario is an example of the transfer of thermal energy by conduction?
Answer:
heat causes winds to blow from the water to the land. Heated air molecules in a hot air balloon soon carried thermal energy to the top of the balloon. this is an example of conduction.
Explanation:
Have a nice day :)
A cruise ship makes its way from one island to another. The ship is in motion compared with which reference point?
A.
the passengers on the ship
B.
the captain of the ship
C.
a lighthouse on a nearby island
D.
the cargo inside the hull of the ship
Answer:
C. A Lighthouse on a nearby island
Explanation:
The moving cruise ship from one island
The photograph shows a result of waves made by an earthquake.
What was transported to this location by the earthquake waves?
O A. Rock
O B. Matter
O C. Gravity
D. Energy
7.9(A) Which of these conditions is most responsible for Earth having an environment
that supports life? help please
in a desert the climate is......... and ........
Answer:



View all
The desert climate or arid climate (in the Köppen climate classification BWh and BWk), is a climate which there is an excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert climates hold little moisture and evaporate the little rainfall they receive.
if humans began hunting and driving the great barracuda to extinction how would this affect the ecosystem (answer should discuss biodiversity, food webs, and food chains)
Answer:
Generally considered to be the tertiary consumers (top level of the food pyrmaid), barracuda feed on an array of preys including grunts, groupers, snappers, small tunas, mullets, killifishes, herrings, and anchovies. By feeding on these marine organisms, barracuda prevent them from increasing in number.
Now let's barracuda's number starts decreasing due to hunting and other reasons. This will result in other primary and secondary consumers to increase in population. An increase in the number of primary and secondary consumers in the food chain will result in a decreasing number of plants, i.e. the number of producers decreases. Hence, this will negatively affect other connected food chains in the marine food web.
Explanation:
Which description is correct for both oogenesis and spermatogenesis?
The cells have 46 chromosomes until meiosis II is completed.
O After meiosis I, the cells have 23 chromosomes.
O Part of meiosis I is completed before birth.
The entire process takes about 70 days.
Answer: b
Explanation:
which of the following processes occurs when nuclei begin to surround the chromosomes on either end of the pole during meiosis I?
a. prophase I
b. metaphase I
c. anaphase I
d. telophase I
Answer:
a
Explanation:
If you have a cup of water the
same temperature as the
ocean, which has more heat
energy?
Answer:
both of them has a same temperature
Explanation:
When looking at the cell membrane, where are the lipid heads located?
Answer:
The cell membrane consists of two adjacent layers of phospholipids, which form a bilayer. The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side.
The cell membrane consists of two adjacent layers of phospholipids, which form a bilayer. The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side.
What is cell membrane?
The cell membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.
Moreover, the cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Hence, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains.
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How to overcome Confusion?????
Answer:
use a full heal
Explanation:
EARTH SCIENCE CLASS
Why is the street (asphalt) hotter than the sidewalk in the summer ?
Answer:
bad albedo ? sorry if not right
The type of useful energy that cells need is called
A. food
B. ATP
C. oxygen
D. glucose
Answer:
B. ATP
Explanation:
The ATP is the type of useful energy that the cells need.
Answer:
B. ATP
Explanation:
The type of useful energy that cells need is called ATP
Cellular respiration is how living things obtain energy for life. The organelle where cellular respiration takes place is the
A. chloroplast
B. Golgi body
C. mitochondria
Answer:
C. Mitochondria
Explanation:
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
The answer is D!!! What was the purpose of Miller and Urey's experiment?
A. to determine the number of biological molecules on Earth
B. to determine whether prokaryotes have cell membranes
C. to find out if prokaryotes evolved from eukaryotes
D. to see if simple molecules can combine spontaneously
Hint: It's D :)
Answer:
D. To see if simple molecule can combine spontaneously
Explanation:
Thanks :)
Areas that do primary succession do NOT have:
A. Soil
B. Rocks
C. Sunlight
Answer:
A. Soil
Explanation:
The areas that do primary succession do not have soil.
The graph shows the size of two populations of the same species over time.
35
30
25
20
Number of individuals
15
Area A
10
Are B
5
1.2) 45.628101112131415
Time
Which of these limiting factors is likely to be more plentiful in area A than in
area B?
A. Flooding
B. Disease
C. Shelter
D. Predators
Based on the given information, it is likely that the limiting factor more plentiful in Area A than in Area B is "C. Shelter.
What are limiting factors?Limiting factors are factors that restrict the growth, distribution, or abundance of a population or organism within an ecosystem. These factors can be biotic (such as competition, predation, or disease) or abiotic (such as temperature, water availability, or nutrients).
The presence or absence of limiting factors can affect the carrying capacity of an ecosystem, which is the maximum population size that the ecosystem can support over time. Understanding limiting factors is important in ecology and conservation biology, as they can affect the health and sustainability of ecosystems and species.
The limiting factor more plentiful in Area A than in Area B is "C. Shelter." This is because the population in Area A consistently shows a higher number of individuals over time, which suggests that there is more suitable shelter or habitat available to support the growth of the population
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A student is instructed to record the odor of a substance after heating it in a test tube. Which is the
correct safety procedure for the student to follow?
A Wave the fumes from the test tube toward the nose with a hand and inhale
B. Tilt the test tube toward the nose and inhale
C. Place the test tube directly under the nose and inhale
D. Cup hands over the test tube and inhale
Answer:
A Wave the fumes from the test tube toward the nose with a hand and inhale
Explanation:
Answer:
A. Wave the fumes from the test tube toward the nose with a hand and inhale
Explanation:
Hope this helps
Heterotrophs create their own food.
O True
O False
Answer:
true
Explanation:
because autotrophs depends on others for their food not heterotrophs
SOMEONE HELP WILL GIVE BRAINLIEST ANSWER
Which of the following suggests what happens when a mutation occurs in an organism? Select one:
Genes begin to appear in different individuals of the population all at once.
The organism develops new traits as a result of using a particular body part.
New traits appear from changes in the instructions given to the cell by the DNA. Useless traits are removed from the organism due to the loss of nucleotides
Answer:
New traits appear from changes to the DNA..
Explanation:
A mutation is when DNA is changed or altered in some way, causing it to tell the cells to do something different from what they usually do such as growing a body part a certain way, or making skin regenerate a certain way. some mutations are specific to one individual person or thing, other mutations are passed down through generations and become a new normal for the species. new diseases such as viruses are often caused by the virus mutating...this is how we have so many different strains of the flu...
