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
densk [106]
3 years ago
11

How many elements have currently been discovered​

Biology
2 answers:
Alex3 years ago
6 0

Answer:

115

Explanation:

kobusy [5.1K]3 years ago
3 0

<em>Elements 1 to 112, Hydrogen to Ununbium are known, with Ununbium only been discovered in 1996. Elements 114, 116 and 118 have also been discovered more recently, bringing the total to </em><em>115</em><em> known elements. Note that Elements 113,</em><em>115 </em><em>and 117 have not yet been discovered</em>

You might be interested in
Charles Boyle was a scientist who studied the relationship between the
kaheart [24]

Answer:

D

Explanation:

7 0
3 years ago
Why does water have a high specific heat
Marat540 [252]

Answer:

Water's high heat capacity is a property caused by hydrogen bonding among water molecules. ... When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy. Water has the highest specific heat capacity of any liquid.

Explanation:

7 0
3 years ago
A mountain showed the following change in profile over millions of years.
Tema [17]

Answer:

I think it is ether B or C

Hope this helps, please tell me if I am wrong

5 0
3 years ago
Read 2 more answers
PLEASE HELP IM DESPERATE
Furkat [3]

Answer:

8. D

9. A

10. A

11. C

12. D

Explanation:

8. Natural selection works on variation that exists in the genes of organisms. Antelopes who have genetic variation that makes their legs more muscular are at an advantage because they can outrun predators. This increases the chance that they will reach reproductive age, and be able to pass this advantageous trait onto their offspring. Over time, this selection pressure makes the variant more common in a population.

9. Beneficial traits are those that give a selective advantage. This could be one that helps it outrun predators (like above), avoid illness and death, gives it a reproductive advantage (i.e. more attractive to mates), or makes it better able to digest certain foods, for example. The formation of cancer cells would be harmful for an organism, reducing its fitness and perhaps leading to death. The inability to reproduce would mean genetic info is not passed on to the next generation, and stopping the production of an essential protein would likely lead to death. However, resistance to a virus would help an organism avoid illness and death, improving fitness.

10. Genotypes are what organisms inherit from their parents, i.e. the genetic information that is passed on. However, the way in which different alleles interact and are expressed is the phenotype. If we take the above example, natural selection is acting on the phenotype of muscular legs. If an antelope had the muscular leg genotype but for some reason it was not being expressed (maybe another gene is interfering with it), then the antelope would not have a selective advantage, and natural selection could not be act on the trait.

11. A trait that better suits an organism to its environment will be selected for by natural selection. This is because that organism is more likely to survive due to the trait, giving it a selective advantage. Therefore, if a mutation arose making the giraffe more adapted to the environment, it would be positively selected for, and through evolution would become more common.

12. This is an example of selective breeding, which has been happening for generations. Farmers spot desirable traits, and cross horses with these traits in an attempt to enhance the trait or to ensure it is passed on to the next generation. This is not natural selection, because farmers are making it happen artificially. It is not cloning or recombinant DNA, which are terms scientists use for actually manipulating the DNA in the lab.

3 0
3 years ago
What chromosomes have genes for the same traits in the same order on both chromosomes
Zigmanuir [339]
Diploid is the answer
7 0
3 years ago
Other questions:
  • Are scorpions <br> producer, herbivore, carnivore, scavenger, or decomposer.
    15·1 answer
  • Why do sperm cells contain so many mitochondria?
    12·1 answer
  • QUESTION PROKARYOTES EUKARYOTES VIRUSES Does it have a nucleus? Does it have membrane-bound organelles? Does it have a cell memb
    11·1 answer
  • The Cycles of Matter
    11·1 answer
  • What is the most important reason to continue efforts to preserve coral reefs?
    7·1 answer
  • Helppppppppppp meeeeeeee​
    10·1 answer
  • Blank 1) Proteins
    6·1 answer
  • What are some examples of structural and behavioral adaptations
    7·1 answer
  • Forms of saprophytic nutrition?​
    8·1 answer
  • In what way are the circulatory system and the nervous system similar?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!