Answer:
C
Explanation:
Semi-permeable means it lets particular things in. It is also called a selectively permeable membrane
<em><u>Plants</u></em> : plants are generally <em><u>autotropic</u></em> living organisms, that prepare their own food by using simple substances through <em><u>photosynthesis</u></em>,
eg. maple, bamboo, etc.
<em><u>Consumers</u></em>: these are living organisms that doesn't produce their own food and depends upon <em><u>producers</u></em> and other <em><u>consumers</u></em> for food.
eg. Human, rat, etc
<em><u>decomposers</u></em> : these are living organisms that break down the <em><u>dead</u></em> and <em><u>decaying</u></em> body of organisms to obtain their food,
eg. bacteria, mushrooms, etc
<em><u>producers</u></em> : these are living organisms that produce their own food through process of <em><u>photosynthesis</u></em>.
eg. plants, cyano bacteria, etc
Answer:
B. Organ system
Explanation:
Cells are the smallest level of organization. They make tissues and tissues make organs like heart and lungs. Organs make organ systems which are the highest level of organization such as respiratory system which includes organs like lungs etc.
Scientific theories are not absolute and unquestionable truths: they are the best explanation of the data, but they can be challenged if new data is discovered or if a new theory is found that fits to and explains the data even better!
The best answer is d: this is not an accurate description of a scientific theory!
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<span>The delineation of an aquatic ecosystem is the process of spatial identification, mapping and recording of the site; description documents the critical components and processes that underpin the ecosystem values of the site, and develops conceptual model(s) and identifies threats.
Delineating an aquatic ecosystem often starts with defining the main aquatic elements (core elements). The core elements will often be distinct landforms or features such as a waterhole, a swamp, a lake or a river. Ecotonal areas may be included as part of the core element or may be considered as a separate zone. For example, riparian vegetation is often considered to be an integral part of a river ecosystem, even if only inundated in big flood events.
The area around the core elements that has a critical influence on ecosystem function is referred to here as the Ecological Focal Zone. Beyond this, the landscape may be usefully differentiated as a Zone of Influence and a Catchment Zone.</span>
