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
zepelin [54]
2 years ago
13

What is a berm?

Biology
1 answer:
lana [24]2 years ago
3 0

Answer:

Flat strip of a land,raised bank ,or terrace bordering a river or canal

Explanation:

A path or grass strip beside a road

You might be interested in
A human sperm cell has Select one:
MrMuchimi

Answer:

the answer to the question is c

Explanation:

that is the

8 0
3 years ago
Read 2 more answers
Name and describe the purpose of two major missions in space exploration. need asap will mark brainliest
morpeh [17]
Apollo 11. Mission to land on the moon. On 20th July 1969.

The Hubble space telescope. A space telescope. Has helped a lot with space exploration.
5 0
2 years ago
How do mutations create such diferences in ones phenotypes and specific characteristics withought mutations getting out of contr
ipn [44]
There is a change in amino acids sequence causes these mutations, If there is an error in the order of amino acids during the process of multiplication, there is a special enzyme to repair errors 
3 0
3 years ago
Iron-55 has a half-life of 3 years. How much of a 40 gram sample will remain after 12 years? A. 0 grams B. 4 grams C. 2.5 grams
Readme [11.4K]

Answer:

\boxed {\boxed {\sf C. \ 2.5 \ grams }}

Explanation:

We are asked to find how much of a 40 gram sample remains after 12 years.

Iron-55 has a half-life of 3 years. Therefore, after 12 years, 4 half-lives have been completed.

  • 12 years/3 years = 4 half-lives

Every time a half-life is completed, half of the sample's mass decays. Remember we start with a 40 gram sample.

  • 1 half- life: 40 g / 2 = 20 g
  • 2 half-lives: 20 g / 2= 10 g
  • 3 half-lives: 10 g / 2 = 5 g
  • 4 half-lives: 5 g / 2 = 2.5 g

There is also a formula that can be used to solve this problem.

A= A_o(\frac {1}{2})^{\frac{t}{hl}

Where A₀ is the initial amount, t is the time, and hl is the half-life.

We know 40 grams is the inital amount, 12 years is the time, and 3 years is the halflife.

  • A₀= 40 g
  • t= 12
  • hl= 3

A= 40 \ g (\frac{1}{2})^\frac{12}{3}

A= 40 \ g (\frac{1}{2})^4

A= 40 \ g * 0.0625

\bold {A= 2.5 \ g}

After 12 years, <u>2.5 grams </u> of Iron-55 will remain.

4 0
2 years ago
In august 2010, the asian clam was discovered in lake george. it is not native to that area. a single clam can reproduce and rel
vekshin1
The introduction of the Asian Clam in Lake George is an example of an Invasive Species.

Asian Clam are small in size, hardly 1.5 inches long. However, they can reproduce very quickly without the need for a partner. A single clam can give birth to hundreds of offspring in a single day without a mate.

Asian Clam is extremely unpleasant for most fresh water bodies since it excretes nutrients such as nitrogen.

This helps in the development of algae and gives off a foul stink.
8 0
3 years ago
Other questions:
  • Which of these is true for both photosynthesis and cellular respiration?
    9·1 answer
  • Great amounts of energy are released
    15·1 answer
  • The wings of swallows and dragonflies perform the same function: they enable the organisms to fly. Based on these images, what i
    6·1 answer
  • How is phosphorus transferred between animals and soil at N​
    8·2 answers
  • ____________________ can happen anywhere along the spine if the neural tube does not close all the way. The backbone that protec
    8·2 answers
  • How do invasive species affect the carbon cycle?
    14·1 answer
  • What animal species has cheek pouches and callous pads on its buttocks? select one:
    6·1 answer
  • Genetic mutations can lead to new ______________ in a species
    7·1 answer
  • 5. The family tree below shows the trait of having attached earlobes. Having
    9·1 answer
  • What are the importance of biology? give any two point​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!