Questions tagged [environment]

The natural world, especially pertaining to the interactions of life therein.

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What are the environmental conditions for larval Haemonchus contortus to survive?

What is known about the environmental limits for Haemonchus contortus to survive outside of a host organism in its larval stages? I'm interested in knowing: temperature tolerance levels preferred ...
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What is the defining characteristics of a Gap Species?

For the following competitive exam question: A road is constructed through a tropical rain forest, following which a population of a species of butterflies declines. Which of the following is NOT a ...
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Why does the SARS-CoV2 virus not remain infectious forever? Or does it?

Given that the majority of biologists do not currently consider viruses to be alive, a virus can never die. It can, however, get destroyed by long exposures to soapy water, alcohol, and apparently ...
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electrostatic charge of viruses, especially Coronaviruses

I am searching for (and failing to find) literature about the electric charge (+/-) of viruses, specifically the Coronaviruses. I am aware that it is a complicated issue, including interaction of pH ...
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Antibacterial soap impacts on septic system?

What impacts do antibacterial soaps have on septic systems? I know that septic systems rely heavily on bacteria (especially regarding the breakdown of wastes by bacteria), so it seems as though ...
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Roughly speaking how stable are short sections of single-stranded RNA in exposed environments compared to double-stranded DNA?

A search following a recent news item led me to a CDC Morbidity and Mortality Weekly Report for 23 March 2020 which says in part: SARS-CoV-2 RNA was identified on a variety of surfaces in cabins ...
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Why are Aardvarks capable of burrowing given their size?

I was wondering if large animals could possibly dig extensive burrows for themselves to live in. The polar bear burrows, but snow is not dirt. The aardvark goes about 4' long, ~150 lbs: similar to a ...
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What are the environmental conditions for SARS-CoV-2 to survive?

What do we know about the environmental limits for nCoV to survive outside the body? For example, in: In open air On surfaces In water What are the limits for temperature, humidity and air pressure,...
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Who were the first authors to talk about local adaptation?

I was curious to read about what Darwin had to say about the existance of locally adapted subpopulations. I discovered to my surprise that the expressions and terms "local adaptation", "spatial ...
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Why is Carbon Dioxide a Greenhouse Gas whereas Ammonia is not? [closed]

Why are some gases Greenhouse gases while some are not? I did search this on the net but didn't get any clearcut/credible answers. What exactly is the property that is common among Ozone, Water ...
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What are the negative consequences of a narrowed biodiversity to the planet?

In this question about the fires in the Amazon rainforest, a user responds with It [the Amazon] is still a part of nature and burning it can narrow the diversity of both plants and animals, which ...
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Best method to collect stream macroinvertebrates to assess diversity index

I am looking for a procedure to collect stream invertebrates to asses diversity index. I have used "kick and pick" techniques and have read about using a leaf ball to attract invertebrates, but have ...
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Is there a physiological reason why direct lightning strikes are not lethal for everyone or does it all come down to dumb luck?

Some people who get directly struck by lightning and some more than once (starts at 00:25) survive while others die instantly or later on due to complications/injuries. Looking at a wiki page for ...
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Have there been any efforts to release opossums as a biological control against ticks?

There's plenty of examples of people recognizing opossums as a great ally in controlling tick populations (here's one example). However, I can't find any examples of opossums being intentionally ...
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How deep could a human swim with SCUBA apparatus?

Using normal SCUBA apparatus and wet suit, how much pressure can the human body withstand? This is assuming that they descend as gradually as necessary for their body to make adjustments. What would ...
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What's the lowest temperature a tardigrade can remain active at?

There's a lot of information floating around the net about how tough they are & what they can survive, like "We now know that some tardigrades can tolerate being frozen to -272.8 °C". But any ...
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What's the lowest atmospheric pressure a tardigrade can remain active in?

I'm not asking what atmospheric pressures they can survive (we now they can survive the vacuum of space) I'm wondering at what point a deficit of atmospheric pressure would cause them to enter one of ...
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What is the thickness of the biosphere?

In other words, what is the vertical distance between the deepest and highest point on Earth where life is found? Life has been discovered at the bottom of the Mariana Trench, 13 km below sea level. ...
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How different is breathing in wildfire smoke in urban areas compared to sitting by a campfire for a night?

The air quality in the Bay Area is currently the worst in the world, due to the devastating Butte County wildfires. I understand smoke inhalation can cause inflammation and respiratory issues, ...
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Firefly mating displays

I live in the northeast US, and really enjoy firefly displays at dusk in the summer. However, when paying attention this summer, I noticed that the fireflies were not displaying every night, but ...
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Environment requirement for human life [closed]

I was wondering, what are the humans needs to fulfill to achieve a human colonisation on mars ? Let me explain, this is for role play game in a futuristic world where humans colonized mars. That ...
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Are there any animals that maintain white fur year round?

Besides examples of rare albino animals, it seems animals only have white fur during the winter. Additionally, and not coincidentally, the examples I've found live in the northern latitudes with ...
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How are epiphytes symbiotic?

I understand epiphytes are not parasitic. But how exactly are they helping the tree on which they grow?
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How is mankind important to nature? [closed]

Like mosquito eggs are important for fish, what’s our role in balancing the life on earth or its ecosystem. Please suggest if this question doesn't fit in this community. I am a mechanical engineer ...
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How do plastic containers and other thrash end up in the ocean [closed]

There are many photos of the ocean, which in some parts is littered with all sorts of waste, often plastic bags, containers etc. But I just wonder - how do such large amounts land in the ocean/sea? ...
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How did hydrophilic plants become established on an isolated island with an arid coastal zone?

I find unconvincing the existing explanation of how several hydrophilic endemic plants became established at St Helena. This is one of the most isolated islands in the world, has an arid semi-desert ...
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What causes plants in the prunus genus to reach anthesis?

In a related question, I ask how to trick fruit trees into flowering later in the spring by prolonging frozen ground conditions. However, I'm starting to realize that I don't actually understand what ...
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Trick fruit trees into flowering later in the spring

There is a common problem with fruit trees in temperate climates where the trees flower before the last frost. Generally speaking, if the tree has flowered, and the temperature drops below freezing, ...
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Are there any oxygen loving bacteria? [closed]

It seems we only found bacteria that hate oxygen. Are there any bacteria that love oxygen and would thrive in high oxygen environment? If it slowed down or stop multiplying in low (as in normal ...
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Is an animal's body height dependent on its environment?

Imagine the follwing situation: a newly born animal is brought into a small room. This room has no windows, but artifical light to imitate the sunlight. Furthermore, this light behaves like the sun, ...
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Have there ever been as many mammals as there are now?

I apologize for the weird question, but based on a Google search it looks like this topic hasn't been discussed before. I'm hoping that enough information about population biology is stored in the ...
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What is the effect of pesticides on worm growth?

As a new semester begins, we were asked to propose ideas for investigatory projects. Our idea revolves around the effects of pesticides on non-target organisms. Since frequent use of pesticides may ...
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Does overfishing in one ocean hurt fishstock in another?

If there's overfishing in the Atlantic or North Sea - will this affect fish stocks in the Indian ocean? Are there papers on this? The question I'm trying to answer is whether overfishing by developed ...
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Can the characteristics of an offspring depend on the locality of its conception also?

Transfer of characteristics from a parent to its offspring is explained in biology. When an adult male and female (of humans) who are displaced from their local environment to another (say, a ...
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Does rainwater contain many fewer micro-organisms than river water?

From watching many documentaries on micro-organisms, I can tell water typically contains quite a lot of them. But what about rainwater? (before it hits the ground). I know nothing about any micro-...
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How does eutrophication yield lower levels of dissolved oxygen? [closed]

Where do the oxygen go? Is it consumed by a particular species? Is just not enough being made? Please explain.
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Why haven't environmentally-reactive bodies developed as an evolutionary advantage? [duplicate]

Regardless of region, earth's tilt results in yearly seasonal changes, which organisms deal with through processes like migration/hibernation. Both seem like attempts to avoid the extreme fluctuations....
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How much carbon does a forest contain?

Trees in a forest, alongside the fungi, animals and plants that live there in, capture atmospheric carbon dioxide and store it inside their tissues and in the soil as humus. It is possible to ...
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Does the process of photosynthesis occur in insectivorous plants? [closed]

Does the process of photosynthesis occur in insectivorous plants? Can you please give me a clear answer and explain to me how? and also can you describe the environment in which they grow ? Thank you
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Could trees be engineered to produce rainfall-nucleators?

Scientists are using genetic engineering to make trees produce more terpenes. Is it possible to genetically engineer trees to produce more hygroscopic volatile organic compounds? These trees could be ...
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In Darwinian evolutionary theory, does the environment has any role? [closed]

In Darwinian evolutionary theory, does the environment has any role? To state it clearly: Suppose I have an isolated system. First, I place several types of entities (organisms) in an environment. ...
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How common is it for environmentally occurring bacillus strain to contain some sort of plasmid?

I am designing a method for testing whether two new bacillus isolates, that are ionic silver resistant, store the silver resistance mechanism on a plasmid or on the chromosome of the bacteria. In my ...
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What is the meaning of “within-season variation”?

I am reading a paper about phenology and climate change for my assignment and I found this concept "within-season variation", can someone explain it to me? and how it is related to changes over time?
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What is the maximum altitude where humans can survive?

What is the highest altitude that a human can survive without being pressurized? Let's assume that oxygen and heat/insulation are not the limiting factors? Why I asked.
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Saturation vapor pressure effect on human body [closed]

I found this calculator: http://www.decatur.de/javascript/dew/ It calculates the dew point based on temperature and humidity. In the result it is mentioned the saturation vapor pressure. I barely ...
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Which class of animals constitute the largest biomass?

I found here that species-wise it is cow. But, collectively, insects may exceed even mammals. So, which class of animals constitutes the largest biomass?
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Are there examples of animals that adapt to their environment very quickly? The phenomenon is called Phenoptic Plasticity [closed]

Evolution and speciation may take millions of years. This made me wonder if there is an animal that adapts itself relatively rapidly to its environment? I don't mean a simple adaptation like a change ...
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Birth control hormones in the water? Or not?

This prior question talks about natural estrogen (TL;DR: Months to years): How quickly do estrogens break down in the environment? Ref: http://dx.doi.org/10.1038/485441a A lot of media has said, "...
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Are trees the only source of large amounts of oxygen?

Trees use carbon dioxide and produce oxygen in the presence of sunlight. But is there any other source? If yes, are trees the most important source of oxygen, or is there any other source which ...
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Limited space for animals - how is that bad?

I am writing an English paper wherein I have to appeal for change in the way humans treat wildlife. I was initially given a situation wherein I took a ferry in a certain area and saw a dead baby ...