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
Phantasy [73]
3 years ago
14

A unique substance composed of atoms having the same atomic number

Biology
1 answer:
Darina [25.2K]3 years ago
6 0

Answer:

Element

Explanation:

An element is made up of a single type of atom, that is, it’s a substance made up of atoms that have the same number of protons in the nucleus, this number is known as the atomic number of the element. An atom is the smallest particle of an element that retains its properties.Each element is made up of atoms with the same chemical properties such as reactivity, ionization potential. Chemical elements are identified by names given in antiquity, derived from some property of them, from the name of their discoverer, from the place of discovery. In nature there are 92 elements that can be presented (at 1 atm of pressure and 25 ºC) as solid: iron, lead; liquid: bromine, mercury or gas: chlorine, oxygen.

You might be interested in
Leaves have air spaces to allow for carbon dioxide and oxygen to move into and out of cells for photosynthesis, which causes wat
geniusboy [140]

Answer:

They have  helical thickening of lignin in their walls to prevent collapse

Explanation:

the primary function of Xylem and its conducting vessels tracheids is to provide  support and tranport  water and  minerals  in plants.

Xylem vessels  have layers of dead materials in the walls called LIGNIN.   Lignin is a polymer; a  very strong, hard materials that stop water passage  through it,because it contains dead cells,

Therefore  the presence of  deposit of these strong  impermeable, ligified  walls  in its  walls  prevent its collapse during mass flow of water of transpiration pull.

6 0
3 years ago
A wolf attacks a porcupine and gets stung with quills. The wolf no longer attacks porcupines. What type of behavior does the wol
Anika [276]
I think anger and fear 
7 0
3 years ago
Read 2 more answers
The cow has 60 chromosomes in its body cells. When the cow's body cells divide by mitosis, how many chromosomes will each daught
Vlada [557]
60 on each daughter cells
7 0
3 years ago
Read 2 more answers
Did the Florida Panther become endangered because of natural selection, genetic drift, or gene flow?
Natalija [7]

Answer:

ALL OF THE ABOVE

Explanation:

Genetic Drift are the changes in allele frequency of a population that result from RANDOM survival or reproduction of individuals with certain characteristics.  Survival or reproduction of those individuals in the face of some environmental change is a matter of LUCK or CHANCE, not because of their phenotype or genotype.

While in Natural selection, the environmental events that affect a population are likely random, but the survival or reproduction of the individuals depends on their phenotypes and genotypes.

Meanwhile, Gene flow is the movement of genes into or out of a population. Low gen flow can lead to low genetic diversity.

Low population which can cause low genetic diversity, poor habitat conditions and habitat loss, road deaths, and commercial development in panther range are constant threats to the Florida Panther's survival.

All these causes are related and therefore affects the Florida Panther.

7 0
3 years ago
What information would you have to know to determine the toughness of a solid?
Mrac [35]
You need to know 1) How much kinetic energy it absorbed before it broke.
2) What materials are able to scratch it.
3) Its mass.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Sherri has recently been injured. She is having a problem using her left hand and would like to use a stylus to move her mouse a
    5·1 answer
  • Which of the following is generally true of an X-linked recessive pedigree?
    9·1 answer
  • What is a stem cell? a cell from which a new cell that has a specialized function is formed a mature egg cell that is capable of
    15·2 answers
  • What is the probability that a human sperm cell will carry an X chromosome ?
    7·1 answer
  • Which of these is an ethical issue associated with stem cell therapy? A) Implantation of stem cells into patients is unethical.
    8·2 answers
  • Ecology help i am sick help with 1-17 tons of points I am very sick and my teacher gave me work
    6·1 answer
  • How do conditions change as the depth of the ocean water increases
    7·2 answers
  • How long does it take for food to digest?
    15·1 answer
  • 1. What is the biggest potential benefit that we can see from genetic engineering? Why?
    7·1 answer
  • Dr. Paul discovers a new chemical that he predicts will increase energy levels in hamsters. He designs an experiment to test his
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!