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
klemol [59]
3 years ago
8

A family that has no elements found in the earths crust

Biology
2 answers:
gayaneshka [121]3 years ago
8 0
<h2>Answer:</h2>

Family of Synthetic Elements

<h2>Explanation:</h2>

In chemical Sciences a synthetic element is a chemical element that does not occur naturally on Earth, and it can only be created artificially in the laboratory. So far, 24 synthetic elements have been created in the laboratory and their atomic numbers lie from 95–118.

damaskus [11]3 years ago
8 0

Answer:

The answer is Synthetic elements.

Explanation:

Synthetic elements are those chemical elements that do not appear naturally on Earth, and can only be created artificially. These synthetic elements were not known to mankind until they were synthesized. They are radioactive elements, that is, unstable, with short half-lives compared to the age of the planet. Therefore they disintegrated almost completely since the formation of the Earth, and they are not found in appreciable quantities except for human action, produced in nuclear reactors or particle accelerators.

You might be interested in
Water at the top of the slope has potential energy. <br> true or false?
Vinil7 [7]
True. Because its staying still
7 0
3 years ago
A population that is decreasing in size will have an age-structure histogram shaped like a(n): 1) inverted pyramid, with a narro
lawyer [7]

The correct answer is - 1) inverted pyramid, with a narrow base representing a small number of young individuals.

The populations that are decreasing are usually population in countries that are highly developed. The conditions for living are excellent, the medical care on high level, life expectancy very high, but the birth rates very low.

In this type of conditions, there's smaller and smaller number of young individuals, with the middle aged population being much bigger, and the older population being constantly on the rise. This will give the age-structure histogram a reverse shape than what it is supposed to have, it will be similar in appearance like a inverted pyramid, meaning that the population is aging and that it will be constantly on a decline in the future.

4 0
3 years ago
All of the following are important properties of prokaryotes except
nikklg [1K]
I’m not sure if there’s options to the question but the answer should be C. prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
7 0
3 years ago
3. Compare and contrast a transverse wave and a com-
gavmur [86]

Explanation:

For transverse waves, the waves move in perpendicular direction to the source of vibration. For longitudinal waves, the waves move in parallel direction to the source of vibration . They are similar in the sense that energy is transferred in the form of waves.

3 0
3 years ago
PLEASE HELP
zimovet [89]

Answer:

B. ATP

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Which term describes the chromosomal abnormality of having extra chromosomes
    10·1 answer
  • Which type of cell is responsible for causing apoptosis in cancer cells and virus-infected cells?
    10·1 answer
  • Gregor mendel concluyo que cada guisante tiene dos unidades para cada rasgo y cada gameto cotiene una unidad . Las unidades de m
    8·1 answer
  • Which illness is most closely associated with time-temperature abused rice or other starchy foods?
    9·1 answer
  • If Susan and Henry continued to have children they would always have type B blood. What are Susan and Henry's genotypes
    15·1 answer
  • How do astronomers rate the magnitude of a star?
    15·1 answer
  • If the number of photosynthetic organisms on the earth decreased drastically, which would happen as a result?
    6·2 answers
  • You are getting ready to carry a firearm on a boat. What is the first step you should take? Put the firearm's safety on. Hand th
    10·1 answer
  • Crossing-over helps meiosis increase genetic diversity. On what structures does crossing-over occur and how does it increase div
    11·1 answer
  • Which type of mutation plays the most important role in increasing the number of genes in the gene pool?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!