HELP PLEASE Give 2 cause and effect examples for Native Species.

Biology

1 answer:

aliya0001 [1]2 years ago

3 0

Answer:

Invasive species cause harm to wildlife in many ways. When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Native wildlife may not have evolved defenses against the invader, or they may not be able to compete with a species that has no predators.

The direct threats of invasive species include preying on native species, outcompeting native species for food or other resources, causing or carrying disease, and preventing native species from reproducing or killing a native species' young.

There are indirect threats of invasive species as well. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife. Aggressive plant species like kudzu can quickly replace a diverse ecosystem with a monoculture of just kudzu. Additionally, some invasive species are capable of changing the conditions in an ecosystem, such as changing soil chemistry or the intensity of wildfires.

Here are some examples:

Cogongrass is an Asian plant that arrived in the United States as seeds in packing material. It is now spreading through the Southeast, displacing native plants. It provides no food value for native wildlife and increases the threat of wildfire as it burns hotter and faster than native grasses.

Feral pigs will eat almost anything, including native birds. They compete with native wildlife for food sources such as acorns. Feral pigs spread diseases, such as brucellosis, to people and livestock. E. coli from their feces was implicated in the E. coli contamination of baby spinach in 2006.

European green crabs found their way into the San Francisco Bay area in 1989. They outcompete native species for food and habitat and eat huge quantities of native shellfish, threatening commercial fisheries.

hope this helps!!:)

Explanation:

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3 years ago

Summarize the key factors DNA polymerase requires to replicate DNA.

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DNA polymerase is an enzyme that helps in the synthesis of new strands of DNA. It is found in both prokaryote and eukaryotes. In prokaryotes, there are 3 types of DNA polymerase and more DNA polymerase found in eukaryotes.

The 3 types of DNA polymerase are DNA polymerase I, DNA polymerase II, DNA polymerase III. The DNA pol I and DNA pol II helps in DNA repair rather than DNA replication. The DNA pol III is the major enzyme that initiates the replication.

DNA polymerase III is a multisubunit enzyme that functions as a dimer of these multiple subunits. The DNA polymerase enzyme has 3 significant enzymatic activities -

All DNA polymerase direct the synthesis of DNA from 3' to 5' end.

It possesses 3' to 5' exonuclease activity. It also helps in proofreading activity by replacing the incorrect nucleotides with the correct base sequence.

Some DNA polymerase has a 5' to 3' exonuclease activity. It is found in the lagging strand.

DNA polymerase is not able to initiate DNA synthesis alone. They need a free 3' end, where the enzyme can add new nucleotides. It means they require 2 primers to initiate the DNA replication in both the direction.

The strands act as complementary to the DNA polymerase. The DNA polymerase adds new strands continuously in 5' to 3' direction in the leading strand. While in lagging strand short fragments of DNA formed. Later they attached by DNA ligase.

DNA polymerase also needs RNA polymerase in some cases to start replication. Such a process is called reverse transcription.

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2 years ago

The nurse is required to wear a gown, gloves, goggles, and mask as personal protective equipment (PPE) when caring for an assign

Ivahew [28]

Gown

The nurse would put on the gown first when utilizing personal protective equipment (PPE). The nurse would then put on the mask, goggles, and gloves.

<h3>What is the sequence followed while wearing a personal protective equipment (PPE)?</h3>

STEP 1: GOWN

Cover the entire body, from the neck to the knees, the wrists to the end, and the back.
Fasten around the waist and neck.

STEP 2: SHOE COVERS

Layer shoes with shoe covers on top.

STEP 3: GLOVES

Apply the first set of gloves and inspect them for tears.
Thumb hole made in lab coat
Thumb through opening in lab coat after pulling it over the hand
Put on a second set of gloves (extend to cover wrist)

STEP 4: MASK OR RESPIRATOR

As you cup the respirator in your hands, place the nosepiece there.
With the nosepiece up, place the respirator under your chin. Pull the top strap over your head, putting it at the back of your head.
Pull the bottom strap so that it is around your neck and just behind your ears.
Mold the nose using two hands.
Put both hands over the mask and take a forceful breath out.
If air leaks, adjust the mask.

STEP 5: GOGGLES OR FACE SHIELD