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katrin2010 [14]
3 years ago
7

A plant with green leaves & red flowers is placed in a) Green ; b) red ; c) Blue light. What color will the leaves & flo

wers appear in each case? Assume all the colors are pure.
Biology
1 answer:
nikitadnepr [17]3 years ago
8 0
<span>a).only leaves will show color flower will tend to be dark. b).only flower will show up leaves will tend to be dark. c). both leaves and flowers will be dark. (any object which has a color absorbs rest of colors of spectrum except that color which it reflects for example: green leaves absorbed v.i.b.y.o.r. except green which is reflected by leaves) so if placed in red light they will not show any color because leaves will absorb red color)</span>
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3 years ago
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Please answer all :)
Serggg [28]

Answer:

i) Rusting occurs the least in tubes 2 and 3 because either of air and water which are necessary for rusting is absent in the two tubes respectively.

ii) Rusting occurs most in tube 1 because both air and water which are necessary for rusting are present.

Explanation:

Rusting is a chemical change which involves a redox reaction. During the process of rusting, metallic iron is oxidized to hydrated iron (iii) oxide by oxygen present in air.

For rusting to take place effectively, each of these three factors mist be available: metallic iron, oxygen and water.

In the figure above, the iron nails in the three tester tubes will rust to different extents based on the availability of the three factors.

In test tube 1, the iron nails will rust the most because all the three factors: metallic iron, oxygen present in air, and water are abundantly present.

In test tube 2, the iron nails will rust the least or not at all because boiling of water removes dissolved oxygen from water and the oil layer above the boiled water prevents entry of oxygen from air. Thus, the nail do not rust because one of the three factors for rusting to take place, in this instance, oxygen is absent.

In test tube 3, the iron nails rusts the least or not at all as well because moisture or water is absent. Calcium chloride, a drying agent removes all the moisture from inside the tube. Hence, even though air is present, rusting do not occur as there is no moisture or water present.

7 0
3 years ago
In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human activity that currently af
Katen [24]

Answer:

<h2><em><u>In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human activity that currently affects or can theoretically affect your chosen ecosystem. Use your food web model to explain how this change can affect the competition for food resources.</u></em></h2>

Explanation:

  • <em><u>ok</u></em>
6 0
3 years ago
Where is chlorophyll found?
lyudmila [28]

Answer:

In the chloroplast.

Explanation:

Chlorophyll is a green pigment plants use to absorb light so they can make food via photosynthesis. Chloroplasts are organelles that contain chlorophyll, so it only makes sense that the best answer is the chloroplast.

6 0
2 years ago
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