04/01/25

How do the sympathetic and parasympathetic nervous systems regulate heart rate and blood pressure?
The autonomic nervous system, composed of the sympathetic and parasympathetic divisions, regulates heart rate and blood pressure to maintain homeostasis. The sympathetic nervous system (SNS)... more
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07/09/19

What fish (and/or shellfish) species with a multi-year life-cycle, besides salmon, die after spawning?
Most species of salmon die after spawning. Are there any other types of fish that spawn once and then die after a multi-year life-cylce? Is this a rare life history strategy among our human... more
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06/18/19

Why is carotene in carrots?
Internet says that the carotene is an important pigment for photosynthesis and UV-protection. That explains its accumulation in leaves. I suppose colored fruits are more appealing to animals, so... more
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04/20/19

Do icebergs have any impact on ecology?
Are icebergs neutral actors in the environment, or do they have any impact on the local ecology. Do they have any environmental impacts that might influence any part of the biosphere?
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03/18/19

Do plants have preference for the form of nitrogen as nutrient?
In the nitrogen cycle (ecology), it is usually described that plants can use nitrogen in the form of ammonium. Do plants prefer one form of nitrogen over the other?
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05/18/17

How is speciation occurred within the Ensatina species?
 I need to write a hypothesis, but first, I need to know what the answer to the question is.
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05/10/17

the number of phenotypes produced dor a given trait depends on how many genes control the trait
This is a true or false question if it is false then i am to change the word phenotype because that is underlined on my paper. 
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05/06/17

what is the history of fracture problem in the world ?
what is the history of the fracture problem in the world ?
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04/26/17

what is the environmental pressure that resulted in all the different breeds of dogs?
a) humans b) competition c) food availability d)disease
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04/07/17

The protists are grouped together simply for convenience. Why are they not considered to be in a specific taxon such as a kingdom or a phylum?
The protists are grouped together simply for convenience. Why are they not considered to be in a specific taxon such as a kingdom or a phylum?
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04/04/17

Explain the effect of changing the amount of available carbon dioxide, water (both in air and soil), and light on the production of sugar by photosynthesis.
xplain the effect of changing the amount of available carbon dioxide, water (both in air and soil), and light on the production of sugar by photosynthesis.
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04/03/17

Quick Question about Biology CLEP exam
I was planning on taking the Biology CLEP exam in a couple months. I was wondering, if I passed the CLEP exam, does that mean that I don't have to take the Biology lab as well? Some guy at my... more
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03/28/17

Why are fish near the water treatment facility plant smaller than fish in cooler areas of stream?
Hypothesis should discuss surface area to volume ration how this relates to metabolic demands thermal regulation and how this affects size of fish  No chemical in the wastewater impact the fish.
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03/05/17

Calculations for plant Growth
 What calculations can be used to calculate seed germination for Biology IA.i watered seeds with different liquids such as coca cola,orange juice and milk and iam comparing the height growth to see... more
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02/18/17

In details discuss various applications for ecology as a human science in natural resource management, Agriculture and wetland
A. Natural resource management B. Agriculture C. Wetland management
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11/12/16

Evolution..
The idea that nature is always better than man-made items is known as what?   A. the Naturalistic Fallacy B. a true statement C. a False Dichotomy D. the Texas Sharpshooter Fallacy
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03/12/16

Answer question fully as possible,justifying your answer with genetic diagram (with keys)as required.list all outcomes
In a species of self fertilising plant,tall is dominant to short,and flower colour can be either red,blue,or in combination purple.Explain the genetics associated with crossing a homozygous tall... more
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