1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helga [31]
3 years ago
6

Which of these most threatens the waters of the niger river ?

Biology
2 answers:
belka [17]3 years ago
8 0

Answer:

Nuclear pollution

Explanation:

lys-0071 [83]3 years ago
3 0

Answer:

Nuclear pollution is the answer

You might be interested in
Which will most likely cause an increase in the frequency of genetic mutations in humans?.
Alex Ar [27]
Increased exposure to X-rays
8 0
3 years ago
Can the temperature of land affect the temperature of air as the air moves over the land?
maksim [4K]

Answer:

A

Explanation:

Land is warmer then air

8 0
3 years ago
Read 2 more answers
A different DNA ladder from NEB (Cat #N3200L) comes as 500 uL of a 1000 ug/mL solution and is not pre-mixed with the 6 X DNA loa
JulijaS [17]

Answer:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder

Load 12 ul on the gel.

Explanation:

DNA Ladder concentration = 1000 ug/ml

1000 ug DNA in 1 ml DNA Ladder solution →    150 ng DNA = 0.15 ug DNA in..... 0.00015 ml = 0.15 ul DNA Ladder solution

6x DNA Loading Buffer → it has to be diluted by an equal volume 6 times (1 ul LB + 1 ul distilled H2O)

An appropriate volume to load on an average agarose gel is 12 ul, so:

2 ul Loading Buffer + 9.85 ul dH2O + 0.15 ul DNA Ladder = 12 ul

But since 0.15 ul is a very small volume and mistakes could be made while measuring it, let's make double:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder = 24 ul

And load half of that solution (12 ul) on the gel.

5 0
3 years ago
Water and land has formed on earth, but why is life still impossible?
Nastasia [14]

Answer: because of the pandimic

it startExplanation: coronvires is the probelm over 4 years it started in 2019 to 2022 it even more year well never know.

7 0
2 years ago
Read 2 more answers
What kind of living and nonliving things do you think a marine biologist studies ?
prisoha [69]
Marine biologists study changes in the ocean. so they will look at the chemical composition of deep waters and see how consecrated the oxygen is. They will also study the movements of the plates because when planted move it usually makes new food for deep life

they will also check animal concentrations in certain areas.

Another thing they do is track animal movements. this could be by putting a tracker on a whale or a shark or anything and watching its depths it goes or watching the distance it goes in a day.
6 0
3 years ago
Read 2 more answers
Other questions:
  • The monomers of proteins are:
    11·1 answer
  • When a plant has a touch response this is called
    12·1 answer
  • Bats, butterflies, and most birds share flight as a trait. However, none of these organisms share the same Class, this trait is
    7·1 answer
  • Why does condensation occur in a newly fertelized egg?
    8·1 answer
  • Please help me 40 points!!! im being timed and i only have 15 minutes!!!
    11·1 answer
  • True or False: An Inoculation Loop is a tool used when transferring/culturing bacteria. *
    10·2 answers
  • Who are autotrophs ?​
    14·2 answers
  • PLEASE ANWSER CORRECT AND ASAPPL
    9·1 answer
  • Which statement describes the relationship between Minerals and rocks
    9·1 answer
  • Boosting photosynthesis what are two reasons that research was significant
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!