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ValentinkaMS [17]
3 years ago
10

What marked the end of the Precambrian period?

Biology
2 answers:
trasher [3.6K]3 years ago
8 0

Answer:

The Appearance of complex, Multicellular animals

kicyunya [14]3 years ago
3 0

Answer:

C- the emergence of simple, protist like animals

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You observe a high proportion of malarial infections in a small village located in Angola. Malaria is caused by the protozoan Pl
svet-max [94.6K]

Answer:

<em>B and C.</em>

Explanation:

The epidemiological triangle is an illustration of interaction among suitable hosts, disease agents, and the environment that drives successful outbreak of diseases.

In order to successfully tackle or reduce the incidence of a disease, the triangle has to be broken.

<em>In the case of malaria which is caused by plasmodium but spread through the female anopheles mosquito, one way of breaking the epidemiological triangle is to eliminate female anopheles mosquito in the environment using any possible means. This will stop the spread of the parasite and hence, the disease.</em>

<em>Another way to reduce/prevent malaria is to prevent the vector, female anopheles mosquito from getting to the host, the human populace. This can also be achieved by several possible means.</em>

Relocating the entire village to a neighbouring village might not break the epidemiological triangle as long as female anopheles mosquito still abounds. In the same vein, antibacterial drugs will not help to treat malaria. However, instructing residents on personal protective measures and controlling the vector through chemical larvicides will go a long way in breaking the triangle and reducing the incidence on the malaria disease.

<em>The correct options is B and C.</em>

5 0
3 years ago
1. Other than having many features in common, state other characteristics of species 2. Give reasons for the loss of energy from
Natasha2012 [34]

Answer:

As a metabolic heat.

Explanation:

The loss of energy from one trophic level to the next in a food chain occurs because energy is lost in the form of heat when the organisms from one trophic level are consumed by organisms from the next level. Only 10% of energy is transferred from one trophic level to another while the remaining 90% energy is lost in the form of heat energy in the ecosystem.

8 0
3 years ago
What causes people to get sick from E. coli, and what would the symptoms be? Also, how can people avoid eating contaminated food
Lunna [17]

ANSWER FOR QUESTION 1:

The most common type of E. coli infection that causes illness in people is called E. coli O157, which produces a toxin known as Shiga-toxin. Shiga-toxin producing E. coli is abbreviated as STEC. Symptoms of infection with this germ include watery or bloody diarrhea, fever, abdominal cramps, nausea, and vomiting.

ANSWER FOR QUESTION 2:

Some other germs don’t cause as many illnesses, but when they do, the illnesses are more likely to lead to hospitalization. Those germs include: Anyone can get sick from eating contaminated food. Follow four simple food safety steps —clean, separate, cook, and chill—to lower your chance of food poisoning and to protect yourself and your loved ones.

4 0
2 years ago
Why are functional MRIs useful to doctors?
Alexus [3.1K]
Doctors are able to see inside your body without having to cut you open
6 0
3 years ago
WILL GIVE THE BRAINLEST <br><br>Explain why the answer you chose is correct.​
Mademuasel [1]

For one thing based off of process of elimination we know that both plant and animal cells have a cell membrane, and a nucleus. Therefore we are left with cytoplasm and cell wall. According to the question we are most likely looking for something in the animal or plant cell that they don’t have in common with each other. Therefore, the answer is cell wall because an animal cell doesn’t have a cell wall, but a plant cell does. The cell wall can also make it more rigid!

7 0
3 years ago
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