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likoan [24]
3 years ago
7

Can someone help me out and as you can see I’m timed so yeah

Biology
1 answer:
lina2011 [118]3 years ago
6 0
I believe 3 and 5 is the answers
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Biogeographic isolation separates of a species through geographical and biological forces.
xenn [34]

Biogeographic isolation refers to the separation of the members of the similar species, or a group of organisms, which breed and generate offspring that can further give rise to young ones.  

The separation can be achieved by the geographical forces like oceans, rivers, and mountains, and by the biological forces, like hunting times, and spring or fall mating.  


5 0
3 years ago
Read 2 more answers
A state is looking to reduce the cost of transportation, which uses 7.10×10^14 BTUs per year. Currently the cost of 10^6BTUs is
Ilia_Sergeevich [38]

Answer:

$ 284 million dollars

Explanation:

If the energy usage of all transportation is 7.10 × 10¹⁴ BTU per year, if their efficiency is to increase by 20%, The new energy usage will be (1 + 20/100)7.10 × 10¹⁴ BTU per year = (1.02)7.10 × 10¹⁴ BTU per year = 7.242 × 10¹⁴ BTU per year.

The energy saved is thus the difference 7.242 × 10¹⁴ BTU per year - 7.10 × 10¹⁴ BTU per year = 0.142 × 10¹⁴ BTU per year.

Since 10⁶ BTU costs $ 20.00, then,

0.142 × 10¹⁴ BTU costs 0.142 × 10¹⁴ BTU × $ 20.00/10⁶ BTU = $ 2.84 × 10⁸ per year = $ 284 million dollars

So the state saves $ 284 million dollars in one year

8 0
4 years ago
According to the phylogeny tree, which two phyla are most closely related?
bonufazy [111]
The answer I came up with is Echinoderms and Chordates.

Happy studying!
8 0
3 years ago
Read 2 more answers
Why are the fields of science, technology, engineering, and math important in the modern world?
Katyanochek1 [597]

Explanation:

  1. This is 21st century .In this time our society as well as all of the world had become advanced and modern.So,in this time if we started to work without any technology then while working we need more manpower and our time will be loss.Science ,technology,engineering and maths play important role in modern world d .It helps in sustain able development and helps any country to be self dependent and makes profit by which Nations will be developed and it helps to win the future.
  2. Hope is useful for you.have a nice day.
4 0
3 years ago
Dont mind the answer I picked
Marat540 [252]

Answer:

cold water temperature of the lake

Explanation:

mark me branilist

4 0
3 years ago
Read 2 more answers
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