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asked in Science & MathematicsBiology · 7 years ago

what might cause a change in population size under natural conditions?

thanks in advance

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  • 7 years ago
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    The abundance of environmental resources such as food, water, and space determines how population abundance changes over time. In the presence of unlimited resources, populations grow exponentially. The abundance of environmental resources determines the rate of population growth over time. (http://www.biologyreference.com/Ph-Po/Population-D...

    A change in population size can be caused by:

    - birth rate

    - death rate

    - age distribution

    - carrying capacity (resources)

    - natural calamities

    - abiotic and biotic factors

    Read more here --> http://www.tutorvista.com/content/biology/biology-...

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  • 4 years ago

    whether it extremely is in basic terms around this time of 365 days then that's what's commonplace as June drop - notwithstanding it could ensue could - July reckoning on circumstances. it extremely is the tree ridding itself of extra fruit for extremely some motives - it won't be ready to take care of each and every of the fruit, the extremely some fruit isn't totally fertilised for this reason won't boost to finished length or there are diseased/broken end result. If it sheds each and every of the fruit today i could guess there is a few thing appreciably incorrect the two with the fruit or the tree - try cutting the fruit open & see if possibly there are grubs in each and every of the end result. if so, you may desire to observe a iciness wash (or grease strips can help too) to the trunk of the tree & make certain that each and every of the infested fruit is picked up & destroyed. it extremely is a good theory to take away any dropped fruit whether it extremely is diseased or infested besides.

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  • 7 years ago

    change in population in what manner. increase or decrease. and natural condition or calamities.

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