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
vagabundo [1.1K]
3 years ago
6

The red line through the Earth designated with the Label "N" is the?

Biology
1 answer:
eduard3 years ago
8 0

Answer:

C. Axis

Explanation:

The label "N" refers to the northern hemisphere, and the red line is the axis on which the Earth rotates.

You might be interested in
Chlorophyll is necessary for photosynthesis to take place because it-
Hitman42 [59]
C it is a green pigment
4 0
2 years ago
Using the illustration above, why are the chromosomes in two of the sex cells different from the chromosomes in the parent cell?
Misha Larkins [42]

Answer: A  the chromosomes from another parent cell were introduced

Explanation: A child is created when the male sex cell joins the female cell. If the male and female sex cells had the standard number of chromosomes, as is found in body cells then the zygote (baby) would have double that number of chromosomes. The number of chromosomes would keep doubling every generation. To avoid this doubling the parent's body cells split by miosis which halves the number of chromosomes and so when the sex cells join the total number of chromosomes is the same as that found in the parent's body cells.

8 0
2 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
3 years ago
All of the following are true facts about enzymes EXCEPT
Lelechka [254]
I believe the answer is c
5 0
3 years ago
Read 2 more answers
A major function of the human urinary bladder is
ioda
The answer is A, storing urine until it is eliminated.


The bladder stores urine, allowing urination to be infrequent and controlled. The bladder is lined by layers of muscle tissue that stretch to hold urine. The normal capacity of the bladder is 400-600 mL. During urination, the bladder muscles squeeze, and two sphincters (valves) open to allow urine to flow out.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Nursing intervention plays a vital role in achieving desired outcomes. what are the categories of nursing interventions?
    10·2 answers
  • The diagram below shows the layers of a rock having an ammonite:
    13·1 answer
  • PLEASE HELP FAST !!!!!!!!!!!!!!!!!!!Which of these is the most likely use of an electromagnetic wave which has frequency lesser
    10·2 answers
  • What is the hallmark of our species, according to evolutionary psychologists?
    11·1 answer
  • What characteristics do ecologists study to learn about populations
    6·2 answers
  • 100. ATP is formed inside mitochondria at
    7·2 answers
  • !!! Please answer this ASAP!!!
    7·1 answer
  • The best treatment for a blister is to pop it, remove the skin covering the blister, and cover it with a bandage.
    5·1 answer
  • To distinguish between human and animal hair, forensic scientists may look at what part of the hair?
    5·2 answers
  • Which of the following is a density-independent regulating factor?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!