Answer: Carbon 12 and Carbon 13
In plant, the ratio of carbon 12 and carbon 13 isotopes is different depending upon the plant photosynthesis. The distribution of these isotopes in plant tissue can indicate the path way of carbon metabolism that is either C3 fixation or C4 fixation. This help scientist to know if the plant consumed by organism is C3 plant or C4 plant by measuring the isotopic signature of their collagen and other tissues.
This can help scientist know which plant is consumed by animals.
Answer:
Hooke frequently included microscopy demonstrations, regaling the reigning lights of English science - Newton, Boyle, Wren - with a variety of preparations. He used a number of instruments to extend the range of vision and investigate appearance and behavior at levels unseen by the unaided eye.
Explanation:
If you're looking for a quote regarding using sunlight as a source or energy, a quote by Maria Telkes would be '"Sunlight will be used as a source of energy sooner or later..." she said. "Why wait?"'
Preventing wind erosion in a dry, sandy area is feasible through any of the following land-use practices:
a. Tillage - creates soil roughness by making furrows and ridges that are perpendicular to the direction of the wind.
b. Crop rotation - rotations of legumes followed by shrubs followed by trees then back to legumes work best.
c. Intercropping - is the most widely used particularly in countries with desert areas. One of the most popularly used is oasis agriculture that makes use of about 3 layers of vegetation.
Answer:
An example of an abiotic factor within an ecosystem is the air temperatures in the mountains.
Explanation:
In an ecosystem, abiotic factors refer to all those non-living elements, which depend on chemical and physical elements. Water, soil, wind, temperature, climate, minerals and soil pH are abiotic elements.
In comparison to the other statements, the one that corresponds to an environmental abiotic factor is the air temperature in the mountains, describing even two factors, <u>air and temperature</u>.
<em> The other alternatives, lion hunting the gazelle, flower growing on the vine or fish swimming in the lake represent </em><em>biotic</em><em> or living elements of an ecosystem.</em>
