BIOLOGY HIGH SCHOOL

Which method describes an example of absolute dating?A.
determining the vertical sequence of rock layers

B.
measuring the radioactive decay of isotopes within rock layers

C.
determining the horizontal sequence of rock layers

D.
identifying index fossil in rock layers

Answers

Answer 1
Answer: B) generally scientists will measure the decay of carbon 14 which is a radioactive isotope of carbon with a specific half life (I think 5437 years but I could be way off don't hold me to that number) and that way scientists can tell how old a fossil is
Hope this helped

Related Questions

One difference between algae and plants is that _____.
How do enzymes speed up chemical reactions
How do plants obtain food? A. They absorb food through their roots. B. They make their own using energy from the sun. C. They acquire it from pollinating bugs and birds. D. They absorb food through their leaves.
What is ecological succession?A. the events in the life cycle of a forestB. the series of predictable events that anecosystem goes throughC. the stages of evolution on any givenpopulation
Amoebas prey upon algae in aquatic environments. a. True b. False

Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?A. the leaves are green
B. the flowers are breathtaking
C. the plant is producing oxygen
D. the bush has thorns

Answers

Answer;

C. the plant is producing oxygen

Explanation;

-Scientific inference is the conclusion of a hypothetical-deductive argument after the experiment is conducted. Inference is the process used in forming a hypothesis and it combines something you observe with your previous knowledge.

-An inference is an idea or conclusion that's drawn from evidence and reasoning. An inference is an educated guess. We learn about some things by experiencing them first-hand, but we gain other knowledge by inference.
"The plant is producing oxygen" is the one among the following choices given in the question that would be an inference. The correct option among all the options that are given in the question is the penultimate option or option "C". I hope that this is the answer that has come to your great help.

The human body contains many different types of glands; glands that secrete digestive enzymes, mucus, and sweat. These secretions are modified, sorted, and packaged for later release from gland cells.What cellular organelle is responsible for modifying, sorting, and packaging proteins and lipids?
A) ribosomes
B) Golgi bodies
C) mitochondria
D) endoplasmic reticulum

Answers

Answer:

The correct answer would be B) Golgi bodies

Golgi body is a cell organelle made up of vesicles and folded membranes.

It is mainly associated with the storage, modification, and packaging of macromolecules such as proteins and fats.

Macromolecules with the help of vesicles are transported from the endoplasmic reticulum to cis-Golgi bodies.  

They are then modified in the folded membranes of the Golgi.

Post-modification they are transported to the different parts of the cell with the help of vesicles.
Golgi bodies are responsible for modifying, sorting and packaging proteins and lipids.

I Need Quick Answer !!How can the United States help the people of other nations affected by climate related disasters? Is this our responsibility? Why or why not?

Answers

The Security Council because, it's a treaty made by the nations to keep peace.

The codons that code for alanine in a potato beetle are the same as those that code for alanine in mackerel and humans. This evidence best supports which of the following ideas?A.
humans and fish evolved from insects
B.
different species synthesize the same proteins
C.
insects, fish, and humans express the same genes
D.
different species share components of the genetic code

Answers

The codons that code for alanine in a potato beetle are the same as those that code for alanine in mackerel and humans. This evidence best supports  the idea that -(D) different species share components of the genetic code

Explanation:

Evaluating the other options given

A.humans and fish evolved from insects-This option is incorrect as human and fish did not have a common ancestors.

B.different species synthesize the same proteins:No this statement also is not the correct option

C.insects, fish, and humans express the same genes-The  expressed genes cannot be same for different species

Hence the correct answer is

The codons that code for alanine in a potato beetle are the same as those that code for alanine in mackerel and humans. This evidence best supports  the idea that -(D) different species share components of the genetic code(As the genetic code is said to be universal

Which form of natural selection on polygenic traits results in the creation of two distinct phenotypes? A. Artificial selection
B. Disruptive selection
C. Directional selection
D. Stabilizing selection

Answers

Which form of natural selection on polygenic traits results in the creation of two distinct phenotypes?   The answer is, B. Disruptive selection

How might a change of one amino acid at a site, distant from the active site of an enzyme, alter the substrate specificity of an enzyme?

Answers

Answer:

An enzyme is a protein. Any change in the primary structure of a protein (the primary structure is the aminoacid sequence) can induce a change in the secondary, as well as tertiary structure (tridimensional conformation). This change in the shape of the enzyme can affect its activity, since it can change the active site consequently to this conformational change.

Explanation:
Other Questions
A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance of the first device is 12 ohms, the resistance of the second device is 4 ohms, and the voltage developed by the generator is 40 V. What is the magnitude of the current flowing through the first device?
When a gas is dissolved in a liquid, the gas dissolves faster if the liquid is?
what question is most closely related to the field of biology? A.How fast does Earth rolate? B.What is the mass of the moon? C.What are most rocks made of? D.What is the average length of a cobra?
How does summation operate in a post-synaptic cell? A). It adds up all of the previous action potentials and releases one of that value. B). Post-synaptic cells do not fire. C). Input from many cells is required for it to fire. D). Sodium ions are moved from one cell to the next in an additive way.