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timama [110]
3 years ago
10

Discuss the similarities and differences between whale flippers and flukes and fish fins, using the scientific terms "homologous

structures" and "analogous structures" in the discussion.
Biology
1 answer:
Sonbull [250]3 years ago
8 0
Fluke don't contain bones, while fins do. Flukes go fast while fins steer. Flukes also manage temperature control.  
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Two selectively permeable sacs A and B were submerged in a 45% glucose solution that was contained in a beaker. Sac A contained
Vesnalui [34]

Answer:

Option a. Only from Sac A to the beaker is correct.

Explanation:

As beaker contains glucose which is a monosaccharide and Sac A also have glucose in it, So, therefore glucose from sac A will move into beaker through the process of OSMOSIS.

Sac A (15% glucose) is less concentrated as compared to beaker (45% glucose) therefore this phenomenon will occur. (See attached image for more detailed and graphical explanation)

5 0
3 years ago
What term includes all the biotic and abiotic factors in an area
REY [17]

Answer: Ecosystem

Explanation: An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A niche refers to the role of a species in its ecosystem. A habitat is the physical environment in which a species lives and to which it is adapted.

8 0
3 years ago
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Nadine kept track of her activities for the same three days, using an activity tracking app on her smartphone. She calculated he
pochemuha

Answer:

Gain weight

Explanation:

Data provided in the question

Average energy expenditure = 1,800 calories

Average of calories per day = 2,949

Based on the above information, the judgment is as follows

As we can see that she consumes 2,949 calories per day and her energy expenditure 1,800 calories for 3 days

Plus she should gain as

= 2,949 calories - 1,800 calories

= 1,149 calories

So by this explanation, she definitely gains the weight

4 0
3 years ago
In fruit flies, the allele for white eyes is recessive to the allele for red eyes. In a generation of fruit flies, 45 males with
podryga [215]
<span>heterozygous / homozygous refers to whether both alleles for a gene are the same. The organism is homozygous if both alleles are the same - that is, either both are dominant or both are recessive. The organism is heterozygous if the alleles are different - that is, if one allele is dominant and the other allele is recessive..
 the answer to the questions is A. </span><span>One parent was heterozygous for eye color and the other was homozygous with red eyes.</span>
7 0
2 years ago
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At each level of the food chain, what happens to approximately 90% of the available energy?
KiRa [710]
90% of the available energy is lost in some form of heat, transferring light energy into different living organisms 
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3 years ago
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