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liraira [26]
3 years ago
14

Noted scientist Dr. Elsa Birde described the effect of adding a mixture of dried apples and raisins to the previous feed of sunf

lower seeds, millet, thistle seed, and cracked corn in bird feeders in her yard. Over three years, Dr. Birde observed that the new mixture increased the number of songbirds at her feeders, especially during the months of April and May. As she has done for several years, Dr. Birde recorded, at the same time each day, the number of birds at each of her four feeders. She noted that the third year using the mixture coincided with the largest increase. There was a twenty-five percent increase in the number of songbirds over times when this mixture was not used. Dr. Birde also noted that in the third year she used a specific ratio of the ingredients, carefully measuring, which she had not done in previous years. The third year also had a warmer than normal spring, and a construction project began in a neighborhood near Dr. Birde’s. Dr. Birde is now going to produce this formula for sale and advertise to customers that they may see the same twenty-five percent increase in songbirds at their feeders.
Which might be a cause for the increase in songbirds at the feeders?
Chemistry
2 answers:
zaharov [31]3 years ago
8 0
I would think that the primary reason for more songbirds is the addition of dried apples and raisins to the birdfeed since the increase was noted after these were added. It may be that, since the other ingredients of the feed do not have significant sugar or sweetness, that this attracted the songbirds. The biggest increase in the 3rd year is probably a combination of a warmer spring and perhaps the construction project meant that workers there were leaving food either intentionally or unintentionally that the birds could eat as well.
ipn [44]3 years ago
7 0

Answer:

A study performed by Dr. Birdie signified that the number of songbirds in her yard enhanced because of a modified source of food.  

Explanation:

A scientific claim refers to a claim, which is postulated by a scientist because of the outcome, which he or she has attained in the research that has been conducted. In the given case, it can be witnessed that Dr. Birdie experience influx of songbirds to her yard as an outcome of the dried apple and the raisin, which she has supplemented in the diet of the birds.  

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6 0
3 years ago
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denis-greek [22]

Answer:

"23.896%" is the right answer.

Explanation:

The given values are:

Mass of NaCl,

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Mass of H₂O,

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⇒  Mass of solution = Mass \ of \ (NaCl+H_2O)

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hence,

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4 0
3 years ago
You hold a gram of copper in one hand and a gram of aluminum in the other. Each metal was originally at 0° C. (Both metals are i
katen-ka-za [31]

Answer:

Option A= copper

Explanation:

According  to specific heat capacity of substances, copper will reach to the our body temperature first.

Specific heat capacity:

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Formula:

Q = m × c × ΔT

specific heat capacity of copper = 0.385 J/g. °C

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Microwaves are defined as electromagnetic radiations with a frequency ranging between 300 MHz to 300 GHz while the wavelength ranges from 1 mm to around 30 cm. The microwave radiation is commonly referred to as microwaves. They fall between the infrared radiation and radio waves in the electromagnetic spectrum. radio waves in the electromagnetic spectrum.

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