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mario62 [17]
4 years ago
9

To be reasonably sure that your observation will apply to the group you are studying, you should select a _______ from the popul

ation and ensure that the selection is ________.
fill in the blank
Biology
1 answer:
iragen [17]4 years ago
6 0

To be reasonably sure that your observation will apply to the group you are studying, you should select a sample from the population and ensure that the selection is unbiased. The participants are selected at random to ensure that all the individuals in the group get equal chance of being represented in the sample. This removes the sampling bias in the sample.

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A small amount of dna is collected from a crime scene. however, the amount of dna collected is insufficient to perform the neces
vekshin1
Answer is: p<span>olymerase chain reaction (PCR).
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3 years ago
Thetrophic level transfer efficiency (TLTE) is defined as the product of 100 and the quotient of production at the trophic level
garri49 [273]

Answer:

The trophic level transfer efficiency (TLTE) is 20 % for the producer and the primary consumer.

Explanation:

The trophic level transfer efficiency (TLTE) is calculated by dividing the value of primary consumer by the value of producer and multiply by 100. The value of 1000 is divided by 5000 and multiply by 100, we get 20 % which means that when the primary consumer eat producer, only 20% of energy is transferred in the body of primary consumer while the remaining 80% energy will be lost as heat energy in the ecosystem.

3 0
4 years ago
What happens to our body (skin) when we swim in the beach/ocean for a lengthy enough period of time? Explain using scientific te
Iteru [2.4K]

Answer and Explanation:

Swimming in the ocean water for an extended period can change the microbes on your skin. Bacteria that make up your skin washed off during swimming. Your body will be covered with ocean bacteria such as potential pathogens that can increase infection possibility. Some ocean bacteria can stay for an extended period of time on your skin, while the number of bacteria is declining after 24 hours. Ocean water could be contaminated with fecal matter, animal waste, sewage spills, and stormwater runoff, leading to infection in our respiratory system, eyes, ears, skin, and gastrointestinal system. Diarrhea is the most common symptom of infection from swimming. The bugs might be present in the ocean water, and if you have cuts on your skin, it can enter the lesion and cause infection, leading to a bloodstream infection. Weak swimmer and immunocompromised people should avoid swimming.

7 0
3 years ago
What type of ecosystem do snails live in<br><br><br> HELPPPP
Zina [86]
The terrestrial gastropods are the only mollusks that have adapted to all the habitats of the Earth. They dwell in areas of high altitude, mountainous regions, hot and cold places. Land snails live and perform their vital functions on the ground and not in the sea or bodies of fresh water.
5 0
3 years ago
Match each organism with its phylum Pines Ephedra Palm-like plants Trees with fan-shaped leaves A. Gnetophyta B. Ginkgophyta C.
solong [7]

Answer:

Ginkgophyta

Explanation:

Gymnosperms are cone-bearing trees or Woody plants, which do not different greatly in their structure from the Woody angiosperms. Gymnosperms do not produce flowers but as seed plants that bear their seeds on scale-like leaves which are arranged spirally to form cones. The seeds are termed naked seeds because they are exposed to the air on the surfaces of the cone scales.

Gymnpsperms are grouped into four major divisions namely:

*Ginkgophyta

*Cycadophyta

*Corniferophyta

*Gnetophyta

1)DIVISION GINKGOPHYTA:The ginkgo tree cared maiden hair is the only surviving member of this division. It is found in the Orient(China and Japan) where it is cultivated as an ornamental tree because of the fan-like leaves. The leaves are *fan-shaped* with long petrioles.

2)DIVISION CYCADOPHYTA:The cycads abound in the tropics, mainly as ornamental plants. They are *palm tree-like* plants with a crowded crown of palm fronds.The leaves of Cuba's are deep green,waxy with large petioles.

DIVISION CONIFEROPHYTA:This is the largest group of Gymnosperms as it includes some of most economically exploited plants such as *pines* and Jupiter's. The pine tree is important as Christmas tree and conifers are generally important in the production of wood and paper

DIVISION GNETOPHYTA:This is the group of very unique Gymnosperms made up of three genera:Gnetum,*Ephedra* and Welwitschia.

Ephedra is a profusely branched shrub found in desert regions. It has whorl-like, scale-like, or needle -like leaves and jointed stem.

Hence, matching each with its phylum, we have:

Gingkophyta:Fan-shaped leaves

Cycadophyta-Palm-like leaves

Coniferophyta:Pine

Gnetophyta:Ephedra

5 0
4 years ago
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