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
Tcecarenko [31]
3 years ago
6

The ratio of uranium-238 to lead-206 in a rock sample can be used to determine the samples

Biology
1 answer:
Semmy [17]3 years ago
6 0
C. Radioactivity 
is the answer 
and Uranium is an element that produces radioactivity

You might be interested in
Why would the cell theory change over time?
alexandr402 [8]

Answer:

The invention of the microscope led to the discovery of the cell by Hooke. While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.

Explanation:

hope this helped you sorry if it did not

7 0
3 years ago
Describe the three main properties of a population​
Tamiku [17]

Population refers to an array of organisms of the similar species, which thrives in a particular geographical region and interbreed. The three main characteristics of a population are density, size, and dispersion.  

The density signifies towards how many organisms are thriving in a specific region. The size refers to how big a population is, and dispersion signifies towards the degree of spreading of the particular population.  

4 0
3 years ago
The offspring of the cross-fertilization of YY pea plants with purple flowers
lozanna [386]

Answer: Yy; they’re purple if there’s no codominance or incomplete dominance

Explanation:

5 0
3 years ago
How many potted plants should they be able to produce on day 3?.
kiruha [24]

Answer: 50

Explanation:

Venya and Kari own a flower shop that specializes in custom bouquets. Wanting to expand into selling potted plants, they create a production possibility chart to asses whether the potted plants are a good idea. Study their chart: 50

i just took a test on this.

8 0
2 years ago
Read 2 more answers
In 1953, the scientists James Watson and Francis Crick published their landmark findings on the structure of DNA. Watson and Cri
Digiron [165]

Answer:

The correct selection of answers to the question: Identify the pieces of evidence describing the features of DNA that Watson and Crick used to determine the structure of DNA, would be:

C: The two chains are parallel, both running in a 5´ to 3´ direction

D: A purine base forms hydrogen bonds to pair with a pyrimidine base located on the opposite DNA strand. Specifically, A pairs with T, and C pairs with G.

E: The sugar-phosphate backbones of each DNA helix run antiparallel to one another

F: The diameter of the DNA doube helix is 2 nm, with each purine-pyrimidine base pair spanning an equivalent distance between the two chains.

Explanation:

Although Watson´s and Crick´s research, and model of the DNA helix, became the breakthrough for science, as it visually presented the now known characteristics of DNA, this research was possible due to the way that these two researchers used previous information found by other scientist on the molecule, to finally build their model. All of the options that were selected were part of the research of several scientis, including Mendel, Rosalin Franklin, Linus Pauling, Maurice Wilkins, Oswald Avery and many others, who worked on different aspects of specimens and their specific characteristics, and which led them to discover that organisms possessed DNA, that this was the unit of information that directed all functions in living cells and how this DNA helix was chemically built to understand how it worked, and why it worked the way it did.

8 0
3 years ago
Other questions:
  • Explain how an unbalnaced translocation occurs
    11·2 answers
  • What disorders are found on chromosome 17?
    11·1 answer
  • Researchers are attempting to insert genes into the DNA of cancer patients. These genes focus the immune system of the patient o
    13·1 answer
  • The scientific name for a polar bear is Ursus maritimus. The scientific name for an American black bear is Ursus
    14·1 answer
  • is it possible to get pregnant a woman if she have a very small egg cell? in comparison a normal egg cell would be like a size o
    10·2 answers
  • Which metamorphic process usually produces foliated rocks?
    6·1 answer
  • 6.The original source of all the energy in the ecosystem is the
    14·2 answers
  • CHALLENGE YOURSELF
    13·1 answer
  • The ---------------<br> contain enzymes that breaks down substances.
    14·1 answer
  • The community of a pond is made up of ?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!