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zalisa [80]
3 years ago
14

Pleaseeeeeeeeeeeeeeeeee hurryyyyyyyyyyyyyyy

Biology
1 answer:
castortr0y [4]3 years ago
7 0

<span>1) Which of the following is a possible formula unit? PbO -  Li2B  - Al2Pb3 -  ClO
The correct answer is PbO which is Lead(II) oxide – also known as Lead Monoxide – which is an inorganic compound. It is an Amphoteric oxide which can be found, in modern use, in industrial glass, ceramics, or computer components, due to its crystal structure. </span>

<span>
</span>

<span>2) What is the formula of a compound formed between iodine (I) and calcium (Ca)?
Calcium will always give two electrons. but iodine can receive only one. Therefore two atoms of iodine react with one atom of calcium to give CaI2. Their bond is an ionic bond.
Ca 2+ + 2I 1- --> CaI2</span>

<span>
</span>

<span>3) What is the resulting formula unit when strontium (Sr) and phosphorus (P) bond?
Strontium (Sr) wants to lose two (2) electrons, and phosphorus (P) wants to gain three (3). By using the criss-cross method, if you flip the 2 and 3 to the opposite elements, you will end up with the formula Sr3P2.</span>

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Which features are created by deposition from rivers? Check all that apply. rills deltas floodplains alluvial fans oxbow lakes
algol13

The features which create deposition from rivers are found in food plains, alluvial fan, and deltas.

Deposition is termed as a process whereby the transported materials by a river are being deposited.

When a river losses energy we say that there is deposition.

Where there is high flow of water in a river deposition is likely to occur because more sediments are being carried as well as erosion which is being caused.

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What type of organism is missing from the food chain? A) An organism that would eat the bear. B) Organisms that would feed off o
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Answer: Its C

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2. Two heterozygous Oompah’s are crossed. What is the probability that the offspring will have orange faces?
Ulleksa [173]
9:3:3:1 is the correct ratio. 
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An ecologist observes that the diet of a bird species consists primarily of large grass seeds (as opposed to smaller grass seeds
omeli [17]

Lets understand the given passage.

An ecologist <u>observes that the diet of a bird species consists primarily of large grass seeds</u> (as opposed to smaller grass seeds or the seeds of other herbaceous plants found in the area).

<u>He hypothesizes that the birds are choosing the larger seeds because they have a higher concentrations of nitrogen than do other types of seeds at the site</u><u>.</u>

<u>To test the hypothesis, the ecologist compares the large grass seeds with the other types of seeds, and the results clearly show that the large grass seeds do indeed have a much higher concentration of nitrogen.</u>

No, he cannot conclude that the birds select the larger grass seeds because of their higher concentrations of nitrogen. The hypothesis testing done by the ecologist is incomplete as he failed to set up a control in the experiment. The control would have been the birds feeding on large seeds that lack or are low on nitrogen content. This will establish a relation between the bird's diet and the size of the seeds and the nitrogen content of the seeds. It could be true that birds do not care about the nitrogen content but simply prefer larger seed sizes.

Another problem associated with his field experiment is the failure in noting the beak sizes of the birds. The beak size and shape enable a bird to break and eat seeds. Larger beaks fail at breaking open smaller seeds. This observation would add bird beak size as another variable of the experiment.


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C. connective tissues write the name of the connective tissue type that matches each description. a connective tissue can be use
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