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The origin of life - Hicksville Public Schools / Homepage
The origin of life - Hicksville Public Schools / Homepage

... Four Groups of Prokaryotes(based on energy and Carbon source)  Photoautotrophs: harness light energy to synthesize ...
BIOLOGY IGCSE Revision Checklist Form 3 2016-2017
BIOLOGY IGCSE Revision Checklist Form 3 2016-2017

... • State the functions of enzymes as follows: – amylase breaks down starch to simpler sugars – protease breaks down protein to amino acids – lipase breaks down fats to fatty acids and glycerol; • State where, in the alimentary canal, amylase, protease and lipase are secreted; • Describe the digestion ...
symbiosis in eco-industrial park: lessons on planning a symbiotic city
symbiosis in eco-industrial park: lessons on planning a symbiotic city

... occurring therein. In contrast to a natural ecosystem, a mechanical system is not selfsustainable and is regulated externally by humans. Nor is the mechanical system obliged to adapt or respond to changes in the surrounding ecosystem. McManus and Gibbs (2008), also point to the disjunction related t ...
The Notes
The Notes

... (1) has wings, no scales, and hair, and why would you classify it that way? (2) has tube feet, spines, and arms that extend out from the body, and why would you classify it that way? (3) is cold-blooded, is living in the water, and has smooth skin, and why would you classify it that way? ...
Understanding and addressing the causes of biodiversity loss
Understanding and addressing the causes of biodiversity loss

... conversion of natural habitats through land use changes, such as agricultural expansion and intensification, deforestation and infrastructure development; pollution from agricultural, urban and industrial wastes; unsustainable use of natural resources, for example, through forestry, fisheries and mi ...
The Balance of Nature: What Is It and Why Care?
The Balance of Nature: What Is It and Why Care?

... atively constant competitive communities. Variation at the plant population level, for example, can sum to give a relatively constant plant community as long as not all species increase or decrease together. These researchers, in a sense, changed the stability question by embracing population level ...
Earth Science- 8.gr- Essential Questions
Earth Science- 8.gr- Essential Questions

...  How has deep sea technology changed over time?  How does the use of deep ocean technology provide us with a broader understanding of ocean ecosystems around the world?  How does temperature, pressure and amount of light change in each zone of the ocean?  How does life change in each zone of the ...
SPRING BREAK PACKET 2013.
SPRING BREAK PACKET 2013.

... What would MOST LIKELY happen in the ecosystem if the population of maned geese greatly increased? A. The lizards would have less competition. B. The kookaburras would have more competition. C. The amount of available food for the frogs would increase. D. The amount of available food for the insects ...
Chapter 3: Feedbacks in the Carbon Cycle
Chapter 3: Feedbacks in the Carbon Cycle

... plants exposed to elevated CO2. If this short-term gain translates to entire ecosystems, in the future more carbon may be stored in woody tissue or in organic matter in soils. Enhanced storage would serve as a sink for excess CO2 and thus act as a negative feedback, decreasing the rate of atmospheri ...
AP/IB Environmental Science
AP/IB Environmental Science

... 5. Define El Niño-Southern Oscillation (ENSO) and La Niña and describe some of their effects. 6. Distinguish between weather and climate and give three causes of regional precipitation differences. 7. Contrast tornadoes and tropical cyclones. 8. Define plate tectonics and explain its relationship to ...
stock-flow resources
stock-flow resources

... stock and its ability to provide a flow in the future But also the fund to which the stock contributes and the services that fund provides  Even abiotic stocks can only be extracted and consumed at some cost to the ecosystem ...
SER International Primer on Ecological Restoration
SER International Primer on Ecological Restoration

... 1. The restored ecosystem contains a characteristic assemblage of the species that occur in the reference ecosystem and that provide appropriate community structure. 2. The restored ecosystem consists of indigenous species to the greatest practicable extent. In restored cultural ecosystems, allowanc ...
Chapter 6: Dimension 3: Disciplinary Core Ideas—Life Sciences
Chapter 6: Dimension 3: Disciplinary Core Ideas—Life Sciences

... mechanisms of inheritance and variability are key to understanding both the unity and the diversity of life on Earth. The committee developed four core ideas reflecting unifying principles in life sciences. These core ideas are essential for a conceptual understanding of the life sciences and will e ...
AMPHIBIANS & REPTILES ARE ADAPTED FOR LIFE ON LAND
AMPHIBIANS & REPTILES ARE ADAPTED FOR LIFE ON LAND

... Amphibians: moist skin & eggs without shells • Most adult amphibians have: 2 pairs legs (4 limbs), lay eggs in water, get oxygen thru smooth, moist skin, have lungs, sense organs adapted for land. • Most live in moist or damp environments • Reproduce sexually (female lays eggs in water & male ferti ...
Characteristics of Life Lab Key!
Characteristics of Life Lab Key!

... consume and autotrophs make their own food by photosynthesis.) Humans are heterotrophs because we eat! 5. Is an earthworm an autotroph or a heterotroph? Growth and Development (metamorphosis, development in egg or in uterus, growth from seed or spore) ...
NB: Gas exchange is the process by which oxygen reaches cells
NB: Gas exchange is the process by which oxygen reaches cells

... Organisms are differently adapted so gas exchange can take place whether it be in water or on land. In particular oxygen is needed to convert organic molecules into energy through the process of respiration. NB: Gas exchange is the process by which oxygen reaches cells and waste products are removed ...
Delivering the sustainable use of natural resources
Delivering the sustainable use of natural resources

... which is still in development. As yet, this field is not particularly mature as it does not have established targets and instruments and its scope is still quite broad. The wide interpretation of natural resources as given in the Communication ...
Delivering the sustainable use of natural resources
Delivering the sustainable use of natural resources

... which is still in development. As yet, this field is not particularly mature as it does not have established targets and instruments and its scope is still quite broad. The wide interpretation of natural resources as given in the Communication ...
PACT Review for 7th Grade Science
PACT Review for 7th Grade Science

... pulling the rest of their bodies forward as well The finger-like structures that they project forward are called pseudopods (false foot). The pseudopods are also used to trap food. ...
Student Study Guide
Student Study Guide

... - To prevent dehydration, fish must constantly work to expel salt from their tissues and increase the concentration of water molecules. They do this by drinking large volumes of seawater and expelling the salt through their gills. - Some organisms, like sharks and rays, have body fluids that have sa ...
4th - Living Systems PBL Unit Question Map
4th - Living Systems PBL Unit Question Map

... What effect do the deer have? What is its niche? 4.5de 1. The Jenga tower represents an forest ecosystem. Each block represents one different native species in our ecosystem. Give students specific examples of plants and animals that live in your local ecosystem. 2. Take turns taking one block out a ...
excretory system
excretory system

... • Regulation within animal systems requires maintaining homeostasis- the ability of the body or a cell to seek and maintain a stable internal environment when dealing with external changes • There are several organ systems that work together to maintain an organism’s internal environment, despite ch ...
excretory system
excretory system

... • Regulation within animal systems requires maintaining homeostasis- the ability of the body or a cell to seek and maintain a stable internal environment when dealing with external changes • There are several organ systems that work together to maintain an organism’s internal environment, despite ch ...
GE in F+I+H - Miss Jan`s Science Wikispace
GE in F+I+H - Miss Jan`s Science Wikispace

... bronchi and the bronchioles. However, this isn’t a huge problem for mammals as they are terrestrial animals. Fish have gills that are very efficient and can achieve an 80% extraction rate of oxygen from water. The numerous thin foldings of the lamellae, (rich in capillaries) increases surface area s ...
Cambrian Explosion
Cambrian Explosion

... Cambrian “explosion” also stems from the fact that it is an un unfolding in history; each successive step not only flows from the conditions established in the previous steps, but also is shaped by interactions at the current stage of unfolding.”! ...
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Natural environment



The natural environment encompasses all living and non-living things occurring naturally on Earth or some region thereof. It is an environment that encompasses the interaction of all living species. Climate, weather, and natural resources that affect human survival and economic activity.The concept of the natural environment can be distinguished by components: Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, atmosphere, and natural phenomena that occur within their boundaries Universal natural resources and physical phenomena that lack clear-cut boundaries, such as air, water, and climate, as well as energy, radiation, electric charge, and magnetism, not originating from civilized human activityIn contrast to the natural environment is the built environment. In such areas where man has fundamentally transformed landscapes such as urban settings and agricultural land conversion, the natural environment is greatly modified and diminished, with a much more simplified human environment largely replacing it. Even events which seem less extreme such as hydroelectric dam construction, or photovoltaic system construction in the desert, the natural environment is substantially altered.It is difficult to find absolutely natural environments, and it is common that the naturalness varies in a continuum, from ideally 100% natural in one extreme to 0% natural in the other. More precisely, we can consider the different aspects or components of an environment, and see that their degree of naturalness is not uniform. If, for instance, we take an agricultural field, and consider the mineralogic composition and the structure of its soil, we will find that whereas the first is quite similar to that of an undisturbed forest soil, the structure is quite different.Natural environment is often used as a synonym for habitat. For instance, when we say that the natural environment of giraffes is the savanna.
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