Biology, 18.11.2019 15:31 jonnie27

Which of the following dating techniques provides scientists with strong evidence that determine the age of a fossil? both relative dating and absolute dating neither relative dating nor absolute dating relative dating by itself absolute dating by itself

Answers: 2

Show answers

Answers

It is relative dating because no scientist can tell the actually time that the layers of rocks where formed or when the fossil began to degrade

Answer from: evazquez

Both absolute and relative dating

Explanation:

There are two ways of finding the age of the fossil.

1. Relative dating

2. Radioactive dating.

Relative dating: In this method, we can only compare the ages of the fossil but cannot precisely find it. In relative dating, we dig the earth and look for the presence of fossils, and it is reasonable that the fossil discovered closer to the surface of the earth is most recent one and the fossil discovered in the deeper layers is the older one. So here we talk about the age of fossil in relative terms.

Radioactive dating: All organic matter on the earth is made up of various elements. Some elements exist in different isotopic forms such as C-12 and C-14. C-14 is radioactive isotope, it is unstable and decays over time at a steady rate. This steady rate is known as half life of the respective isotope. We can calculate the ratio of observed abundance of that radioactive isotope and its decay product in the fossil or rock we are studying. This is the principle of radioactive dating.

Answer from: Quest

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

Answer from: Quest

The answer is 0.01 meter

Another question on Biology

Biology, 22.06.2019 01:30

Environmental impacts on evolution : mastery test

Answers: 3

Answer

Biology, 22.06.2019 08:00

Which of the following is a testable hypotheses?

Answers: 1

Answer

Biology, 22.06.2019 09:00

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Answers: 1

Answer

Biology, 22.06.2019 16:00

In sheep, the allele for belly fur (a) is dominant to the allele for no belly fur (a). a mother with the genotype aa and a father with the genotype aa produce an offspring.

Answers: 1

Answer

You know the right answer?

Which of the following dating techniques provides scientists with strong evidence that determine th...

Questions