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tekilochka [14]
3 years ago
11

Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.

Biology
1 answer:
laiz [17]3 years ago
7 0

Answer: b c d

Explanation:

Hkk

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28. True or false: Ground beef labeled "75 percent lean" is a good
irakobra [83]

Answer:

False

Explanation:

Ground beef labeled 75% lean could be a good choice, but that is because it contains only 25% fat, not 25% of its calories come from fat.

4 0
3 years ago
Suppose that this population of mice has stabilized so that both white and brown appear. White mice survive better in the winter
arsen [322]

Answer:

The population of the white mice would significantly decrease, and most of the mouse population would be with brown fur.

Explanation:

As stated in the question, the brown mice survive better in warmer times. This is due to the fact that with winter and snowy times it makes it harder for prey to spot the WHITE mice v.s. the BROWN mice who would very easily be spotted by the prey in snowy regions.

6 0
3 years ago
Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
siniylev [52]

Answer:

Explanation:

Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.

DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.

Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible.

7 0
3 years ago
A tissue sample was taken from an infected wound and cells were viewed under the microscope. Each cell contained a cell wall, ce
lukranit [14]

An unidentified prokaryotic cell. Thus, option "4" is correct.

<h3>What atr prokaryotes and eukaryotes?</h3>

Prokaryotes are the unicellular organisms that do not contain nucleus and membrane bound organelle in their cell. Their genetic material is present in the cytoplasm.

On the other hand, eukaryotes have true nucleus that contains the genetic material (DNA). They also contain membrane bound specialised organelles (such as mitochondria, endoplasmic reticulum, golgi complex).

Thus, option "4" is correct.

To learn more about Prokaryotes  click here:

brainly.com/question/15329345

#SPJ1

7 0
2 years ago
Many of the organisms in the ocean are nutrient-limited. if you wanted to investigate this phenomenon, one reasonable approach w
Mamont248 [21]
None of the provided options are reasonable. <span>comparing nutrient concentrations between the photic zone and the benthic zone can not tell you whether differences in concentrations between the photic and benthic zone are due to uptake by phytoplankton or because nutrients are sinking to the sea bottom and ocean stratification is preventing mixing.  The approach of c</span><span>ontrasting nutrient uptake by autotrophs at different locations under different temperatures would not provide useful information on limiting nutrients. but rather uptake rates at different temperatures.  It is likely that e</span>xperimentally enriching some areas of the ocean and compare their productivity to that of untreated areas can provide an indication of limiting nutrients, but this is not advisable, as it would have to be done on a large scale, and one cannot be sure of the ecological consequences. Also, because it would not be a controlled experiment, other factors could create 'noise' in the data. The last option, <span>observe antarctic ocean productivity from year to year to see if it changes, also does not help, as there is no correlation between nutrient concentrations using this approach. The best approaches would be either the last approach, but with the additional monitoring of nutrient concentrations, or under a controlled laboratory experiment.</span>
5 0
3 years ago
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