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natali 33 [55]
2 years ago
6

According to some scientists, what resulted from the environmental conditions existing on primitive earth illustrated above?

Biology
1 answer:
LekaFEV [45]2 years ago
3 0
<span>Some scientists have presumed that nature of life may exist with the choice dictated by the local environment<span>. The primitive earth illustrated the evolution of the first heterotrophs from aggregates of organic molecules from the development of heterotrophic forms according to the existing environmental conditions.</span></span>  
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Given the parents AABBCc × AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the pro
galina1969 [7]
The answer is C) 3/4

Let's analyze separately each of the traits:

Parental generation: AA x Aa
F1 generation:       AA AA Aa Aa
So, all progeny will <span>phenotypically resemble the first parent.

</span>Parental generation: BB x bb
F1 generation:       Bb Bb Bb Bb
So, all progeny will <span>phenotypically resemble the first parent.
</span>
Parental generation: Cc x Cc
<span>F1 generation:       CC Cc Cc cc
</span>Only 3 (CC, Cc, Cc) out of 4 progeny will <span>phenotypically resemble the first parent.

The genotypes for first two traits will not affect </span>phenotypical resemblance to the first parent. So, it only counts the third trait, for which the chance to have progeny that <span>phenotypically resemble the first parent is 3/4.</span>
7 0
3 years ago
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 
7 0
3 years ago
Read 2 more answers
1. How much of downtown boston was original land? Where did the rest come from?
Hatshy [7]

History of Boston is described below.

Explanation:

  • When workers cut down Copp's hill the only thing they left untouched was the old three-acre burying ground. The city built a retaining wall around the graveyard to prevent it from eroding. In 1814, the Boston and Roxbury Mill Corporation built the Boston & Roxbury Mill Dam across the back bay
  • Originally called Tremontaine for the three hills in the area, the Puritans later changed the settlement's name to Boston, after the town in Lincolnshire, England, from which many Puritans originated.
  • South Boston, which was front and center in the battle, is no longer that close-knit old school “tough-as-nail” Irish Catholic enclave. “Southie,” as it is still fondly referred to, houses the world today flaunting some of the best restaurants and expensive housing in the city
  • Boston was founded in 1630 by English Puritans fleeing religious persecution. On 29 March 1630 a fleet of 11 ships carrying 700 people sailed from England to Massachusetts. They were led by John Winthrop (1588-1649). At first the people settled at Charlestown, which had been founded the year before.
  • Much of Boston's coastline is man-made land. The original shoreline, from 1630, is visible in dark green on this map. Land made between 1630 and 1995 is light green.Boston is a safe city, but as with any major city, you should take the usual safety precautions. Stay in well-populated areas, travel with others, especially at night, and keep track of your belongings. The tourist areas in Boston are generally safe, but some areas deserve mention.
6 0
2 years ago
I really need help plz
mariarad [96]

Answer:

A and B? im sorry if its wrong i havent learned that in a long while

5 0
3 years ago
In what ways does the "viscosity" of H₂O — as a property of H₂O — beneficial to life on Earth? {No answer choices given. WILL CO
butalik [34]

The viscosity of water is the thickness of water (it might also be considered the stickiness when talking about other fluids). Water has many properties, and the viscosity of water influences in many of them. We can take the surface tension of a liquid as an example. The more viscous a substance is, higher will the surface tension be and vice versa since there will be a higher and lower attraction between molecules respectively.


→ The surface tension of water is something really important since it contributes in many ways to the environment and if you think about it, if the water was a little less viscous, there wouldn't be water since the viscosity of water makes it resistant to evaporation to a certain degree.


Hope it helped,


BioTeacher101

5 0
3 years ago
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