Smelts are the primary food source for lake trout and salmon in Moosehead. In the late 1980s, we documented a dramatic increase in the abundance of wild lake trout in Moosehead Lake. Swelling lake trout numbers taxed the forage base and the smelt population took a dive. What was the result of depletion of the smelt population? Choose all that apply.
A) salmon populations declined
B) all three populations increased
C) all three populations would decrease
D) growth rates of both lake trout and salmon suffered
E) salmon population would decrease but the others would remain unchanged

Answer: A baby learning how to use a fork

Explanation:

Answer:

Alec Jeffreys and the Pitchfork murder case: the origins of DNA profiling

British geneticist Alec Jeffreys began working in 1977 on a technique that could identify individuals through samples of their DNA. In 1984, he and colleagues devised a way to use a newly discovered property of DNA, isolated areas of great variability between individuals called restriction fragment length polymorphisms (RFLP), for forensic identification—the original DNA fingerprint.

In 1986, police asked Jeffreys for help in finding a man who had raped and killed two girls. DNA tests exonerated the primary suspect. Through a genetic dragnet, police found the perpetrator, Colin Pitchfork, who gave himself away when he asked a friend for a substitute blood sample.

Within a year, genetic fingerprinting was making the unique molecular structures of victims and suspects visible in criminal investigations around the world. Today, RFLP-based DNA analysis is being supplanted by newer techniques of genetic identification.

Explanation: .

The correct answer is complete flower. A flower that Contains both a male and a female reproductive structure is considered a complete flower.

A complete flower is a flower that includes all the four whorls such as petals, sepals, the male reproductive structure and female reproductive structure (pistil/ carpel).

Hence it is also called as a complete or perfect flower. Petunia is a complete flower.

Thus the correct answer is complete flower, is also called as a perfect flower.

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The more significant problem is that raw sewage causes eutrophication, which is an expansion in the concentration of chemical elements needed for life. The natural systems on steroids. The nitrates, phosphates and other organic matter found in human waste serves as a food for algae and bacteria.

Sewage and wastewater contain bacteria, fungi, parasites, and viruses that can induce intestinal, lung, and other infections. Bacteria may cause diarrhea, fever, cramps, and vomiting, headache, weakness, or loss of appetite.

Thus, The larger issue is that raw sewage causes eutrophication, which is an growth in the concentration of chemical components.

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Answer:

i would say A

Explanation:

If they don't be on the nest where will they live

Answer:

D.  

explanation:

The length of daylight, or changing the ratio of daylight to darkness, as well as temperature, triggers the instinct to migrate. building is learned or instinctive behavior. it is primarily instinctive.

Another thing is I got it right on my test, hope this helped!

Answer:

almost all of our food contain them .so answer is option C

Explanation:

Almost all of our foods contain food spoilage microorganisms.

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Answer:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Answer:

Mutation

Explanation:

If the normal body temperature is 98.6 F then the TOD can be calculated.

The time of death prediction is usually based on the body temperature of the victim or the temperature of certain vital organs in the body.

In this case, we know that a dead body will loose heat at about a degree and half per hour. If the normal body temperature is 98.6 F then the TOD can be calculated.

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Answer:

Without a global magnetic field surrounding Mars, the currents induced in the solar wind can form a direct electrical connection to the Martian upper atmosphere.

Explanation:

With a single elegant operation, the strength and paths of the currents pop out of this map of the magnetic field,” Ramstad said. Without a global magnetic field surrounding Mars, the currents induced in the solar wind can form a direct electrical connection to the Martian upper atmosphere.

Answer:

When a neural impulse reaches the end of an axon, it causes the tiny oval sacs at the end of the axon to release chemicals called neurotransmitter.

Answer:

The nucleus is at the center of the cell. The nucleus is known as the cell headquarters.

Explanation:

Answer: The nucleus. ✅

A nucleus is the center organelle of a cell that stores DNA. DNA is interpreted to some as data, or instructions. These, "instructions" are often carried out by, "spheres with feet" as some people call them. Their real names are vescicles. They are like the mailmen of the cell, carrying out the instructions their boss, the nucleus, gives them, always making sure every other thing in the cell functions properly.

The individuals who have purebred dominant genotype would be at a disadvantage in an area with a high prevalence of malaria.

Malaria may be defined as a disease that is caused by the plasmodium parasite and may spread to the people through the bites of a female mosquito Anopheles.

Those individuals who have the genotype purebred dominant (AA) produce normal red blood cells, while the individual who has the genotype purebred recessive (aa) possess sickle cell condition. The normal red blood cells are immaculate hosts for the infection of malaria.

Therefore, the individuals who have purebred dominant genotype would be at a disadvantage in an area with a high prevalence of malaria.

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Answer:

the nature of their small subunit rRNA gene sequences is different

Explanation:

most animals have hox genes

Answer: After mitosis, the daughter cell has 20 chromosomes and after meiosis, the daughter cell has 10 chromosomes.

Explanation:

Answer:

Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection

Explanation:

Answer:

The marine iguana is the only lizard in the world with the ability to live and forage at sea and is endemic to the Galapagos Archipelago. There are eleven very similar subspecies, found on different islands, with those from Isabela and Fernandina being the largest. The adults are black for most of the year, however the males change colour during the mating season – with different subspecies adopting different colourations. Near Española and Floreana they are most colourful – turning bright green and red; on Santa Cruz they are red and black; and on Fernandina they become dull green and brick red. The juveniles are generally black, with a lighter dorsal stripe than the adults. During the mating season males fight for dominance over harems of females, which they will fiercely defend from rival males.

Marine iguanas are not a very agile species on land, but they are excellent swimmers – moving easily through the water as they feed on algae. Larger individuals go further out to sea and use their powerful claws to grip on to rocks in strong currents to feed, whilst the smaller ones stay inshore near rock pools, feeding on algae exposed at low tide. Due to the high concentration of salt in their diet, marine iguanas filter their blood at the nose and sneeze out the excess salt, often forming salt crystals on the snout.

Despite not being truly social, iguanas are highly gregarious – especially on cold nights when they tend to group together to conserve heat. In the morning, they bask in the sun, absorbing heat with their black scales until they have enough energy to swim out to sea to forage. Upon entering the water, their heartbeat slows to half its normal pace in order to conserve energy and allow them to feed for as long as possible.

In Galapagos

Where to see them: They can be seen in coastal regions on the islands of Isabela, Fernandina, Española, Floreana, Santa Cruz and other islets around them.

When to see them: They live on the islands all year round, with the mating season occurring between January and March. They are active during the day and spend a lot of time on rocks basking in the sun.

Threats: The introduction of cats and dogs by humans has greatly affected the numbers of marine iguanas as they predate upon the juveniles, which are poorly adapted to defending themselves against large land predators. El Niño periodically decreases the iguana population (by up to 85%), as it cuts short their food supplies. Oil spills may also have similarly dramatic effects on the population. They could also be threatened by marine plastic pollution – specifically microplastics.

Conservation: The marine iguana is protected under Ecuadorian law and is listed under CITES Appendix II. Currently, we are working with partners to assess the risk of marine plastic pollution to marine iguanas as part of our Plastic Pollution Free Galapagos programme. GCT has funded a research project investigating the population dynamics of the marine iguanas on San Cristobal as there may in fact be more than one species of marine iguana present on the

Explanation:

Unlike land lizards, marine iguanas have blunt snouts that help them feed on algae underwater. They also have flattened tails that help them swim efficiently. 4. Marine iguanas typically spend only a few minutes underwater eating but can spend up to 30 minutes at a time submerged.

Answer:

As the wolf population grows, the pace of expansion of the rabbit population slows and ultimately declines. The wolf population grows slowly at first, then declines as the rabbit population declines.

Explanation:

Answer:

a tornado i think if not i dont know

Answer:

Explanation:

A habitat is the place where an organism lives while a niche is that organism's role within that environment

An ecosystem is a biological community of interacting organisms and their physical environment.

In ecology, the term “niche” describes the role an organism plays in a community

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Answer:

when there is much water in blood

Answer:

The order of life in hierarchical order is:

atom, molecule, macromolecule, organelle, cell, tissue, organ, organ system, organisms, population, community, ecosystem, biome and biosphere.

Explanation:

Answer:

(3)

Explanation:

I found it on a website.

The Coriolis effect is named after Gaspard Gustave de Coriolis (1792–1843), who provided the first mathematical explanation for this apparent deflection of motion off a straight line in a rotating coordinate system.

The Coriolis effect depicts the pattern of deflection experienced by objects traveling great distances around Earth without being firmly linked to the ground.

Several significant large-scale weather patterns are caused by the Coriolis effect. Earth's rotation is crucial to understanding the Coriolis effect. Particularly, Earth rotates more quickly at the Equator than at the poles.

Because Earth is wider towards the Equator, equatorial regions rotate at a speed of around 1,600 kilometers (1,000 miles) per hour in a 24-hour period. Earth rotates slowly toward the poles, at 0.00008 kilometers per hour.

Therefore, The Coriolis effect is named after Gaspard Gustave de Coriolis (1792–1843), who provided the first mathematical explanation for this apparent deflection of motion off a straight line in a rotating coordinate system.

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Answer:

Fish and whales are both vertebrates, which means they both have backbones. They also live in aquatic environments. Except for a couple of species, whales live only in the ocean water. Fish, however, inhabit both fresh and salt water.

Both species live to the age of about 60. Both almost certainly remember long-past events. And individuals of both species act heroically to protect other members of their group. Like humans, whales and elephants are adaptable.

When parallel light rays exit a concave lens the light rays diverge. Option A. This is further explained below.

Generally, ray divergence is simply defined as when light rays begin at a point and diverge,

In conclusion, when light rays begin at a point and spread, it is called ray divergence.

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Answer:

diverge

Explanation:

edge 2022

Answer:

uhhhh i don't know new to this thingy and I don't k ow what I'm doing