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
qaws [65]
3 years ago
7

How have scientists determined the earth's core is composed of iron and nickel?

Biology
1 answer:
Sedaia [141]3 years ago
8 0
<span>The correct option from the given options is: "Scientist have determined the composition of Earth's core by using radiometric dating to examine meteorites".
</span><span>To date materials the procedure of radiometric dating or radioactive dating is used, for example, rocks or carbon, in which trace radioactive impurities were specifically fused when they were framed. The strategy looks at the abundance of a normally happening radioactive isotope inside the material to the abundance of its decay items, which shape at a known consistent rate of decay.</span>
You might be interested in
Is a superficial fungal infection found on the head.
Marianna [84]

Answer:

Option B, Tinea capitis

Explanation:

Superficial fungal infection of skin of head or scalp is known as Tinea capitis.

These fungal infection attack the hair shafts and follicles and is a superficial form of mycosis or dermatophytosis.

Tinea cruris is the superficial infection of genitals, buttocks and inner thighs regions. Hence, option A is incorrect.

Tinea pedis is the superficial infection of foot and regions between the phalanges. Hence, option C is incorrect.

Tinea corporis is the superficial infection of arms, legs or skin. Hence, option D is incorrect.

Thus, option B is correct.

4 0
3 years ago
Once at the target tissue, _____ soluble hormones bind to intracellular receptors inside the cell membrane.
mel-nik [20]
In this scenario, once in a target tissue, the water soluble hormones which is the answer would then bind to the intracellular receptors inside the cell membrane. Hope this is the right answer and would be of big help then.
6 0
3 years ago
Describe the process of cell growth and cell division
harkovskaia [24]
Not sure on this one
6 0
3 years ago
A geneticist analyzes the four products of a meiosis for an Aa Bb plant and finds that two of the products have the AB alleles a
slega [8]

Answer:

No, this is not consistent with the principle of independent assortment.

Explanation:

The principle of independent assortment states that alleles from different genes assort independently. This means that if a plant has a genotype Aa Bb, all four alleles (A, a, B, and b) are going to segregate equally, so we will have the following four gametes after meiosis:

- AB

- Ab

- aB

- ab

If the researcher finds that two of the four products are AB, probably there would be a deviation of Mendel's laws.

3 0
3 years ago
what is the force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second
vichka [17]

Answer:

The force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second is 12 newton.

Explanation:

  • According to Newton's second law based motion "the moving object's acceleration is based upon two terms - one is the total force acting upon that object and the other one is the net mass of the object."
  • In mathematical term, F=ma. where F= force, m= mass, a= acceleration.
  • So, by performing the calculation, \bold{\mathrm{F}=30 \times 0.4 \mathrm{N}=12 \mathrm{N}}
  • 12N force will move the boy along with the wheel chair.
8 0
3 years ago
Other questions:
  • the earth is the 3rd planet from the sun. it receives just the right amount of heat from the sun, which contributes to the plane
    10·1 answer
  • In the 1800s, how did Darwin explain the origin of species?
    13·2 answers
  • This cell is getting ready to divide. The instructions to form another cell are inside the_________, which are found in the nucl
    8·2 answers
  • "how are mutations and polymorphisms similar and how are they different"
    11·1 answer
  • Which part of a DNA molecule carries the genetic instructions that are unique for each individual: the sugar-phosphate backbone
    12·1 answer
  • All the known dwarf planets except Ceres orbit in the A. asteroid belt. B. Milky Way. C. Kuiper belt. D. Oort cloud.
    14·1 answer
  • What happen if the electron transport system in the light dependent reaction of photosynthesis was disabled
    6·1 answer
  • What are three ways a plant's organ systems work together?
    6·2 answers
  • Which statement best differentiaates between weather and climate
    12·1 answer
  • What would be a more
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!