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
ipn [44]
2 years ago
13

Amber is a solid material

Biology
1 answer:
pickupchik [31]2 years ago
3 0
Maybe it’s not a mineral because it’s just hardened tree resin whereas minerals can be mined and found deep in the earth…?
You might be interested in
Describe how the first organic molecules arose.
Naya [18.7K]
Atoms combined to make molecules most likely through compound or ionic bonds
4 0
3 years ago
Read 2 more answers
Describe how DNA is coiled and eventually supercoiled to condense it into chromosomes.
Solnce55 [7]

Double-stranded DNA loops around 8 histones twice, forming the nucleosome, which is the building block of chromatin packaging. DNA can be further packaged by forming coils of nucleosomes, called chromatin fibers. These fibers are condensed into chromosomes during mitosis, or the process of cell division.

Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

During DNA packaging, long pieces of double-stranded DNA are tightly looped, coiled, super coiled, and folded so that they fit easily within the cell.  This highly compacted DNA is then arranged into structures called chromosomes.


8 0
3 years ago
Explain an example why selective breeding is an example of biotechnology
lina2011 [118]
Example of selective breeding: Cows that produce lots of milk. Selective breeding to create more useful varieties of animals and plants is a form of biotechnology that human beings have used for thousands of years. Biotechnology includes any use of science or technology to alter the characteristics of a particular breed or animal.
7 0
3 years ago
Which of these sentences describe sources and preservation of genetic variation? Select all that apply.
madam [21]

The correct sentences are the following:

 A) Antibiotic resistance in bacterial populations is caused by natural selection of bacteria that inherit mutations that make them resistant to the antibiotics.

 C) Crossing-over causes a shuffling of allele combinations during meiosis as the alleles from each parent form new combinations on homologous chromosomes.

 E) When two bacteria are linked during conjugation, the donor cell passes DNA to the recipient cell which causes genetic recombination.

Explanation:

These three options are associated with the generation and preservation of genetic diversity

4 0
3 years ago
How do fishermen exploit seafood on the Mississippi River? Help me now, 10 points for you :(
aleksandrvk [35]

It's safe to eat the fish there,” says Langley.So according to officials and experts, it is safe to eat that Mississippi River catfish.

5 0
3 years ago
Other questions:
  • . A world-class cyclist training for the Tour de France increases his respiration rate while pedaling up hills. What characteris
    12·1 answer
  • Explain how carbon is transferred within and between organisms and the environment.
    6·2 answers
  • Why is a squid considered a cephalopod?
    8·2 answers
  • Plz help me with this.
    10·1 answer
  • Photosynthesis is a process by which plants turn energy from sun into 1.___ or 2.___
    13·1 answer
  • which of the following is an example of commensalism? i just need someone to check my answer if its wrong correct me.
    15·2 answers
  • Please help it’s urgent!!! For these two question
    7·1 answer
  • I got little time left
    9·1 answer
  • Enzymes__. Are not required to substain the life of an organism
    5·1 answer
  • bisphosphoglyceric acid (bpg) is a byproduct of glycolysis released into the bloodstream when an animal's supply of oxygen is lo
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!