Answer:
Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary relationships between organisms.
Explanation:
sincerely, micah
The correct answer is option a plant that has only two alleles for a trait.
In order to perform the Mendel's experiment, the conditions should be similar to the Mendel's actual experiment. The Mendel experiments shows the presence of two alleles controlling a single trait. So, in order to study the plant as the Mendel did, the person should choose a plant which have two alleles for a particular trait.
The plant must be able to self and cross pollinate in order to study the Mendelian characteristics accurately. IF a plant carry only recessive allele, then the effect of the dominant allele cannot be studied, so, the plant carrying only recessive allele should not be studied. Studying three allele coding for the same trait would be difficult to study the Mendelian characters, so, this plants should not be examined to study Mendel's experiment.
Commensalism is when a parasite feeds of of something, but doesn't hurt the host.
Over utilisation of resources is the unlimited and careless use of any resource or utility. It refers to the excessive use of something to a point that in return we are deteriorating the resource. It can also be termed as exploitation or sustainable use. In the 21st century, we must focus on sustainable development and not over-utilisation of resources.
The correct option is B.
The field of science is very dynamic and it thrives on discovery of new evidences. When new evidence are found for a particular phenomenon, the existing phenomenon has to be adjusted to fit the new discovery. Air pollution was once named to be responsible for global cooling because enough evidence was not available then to prove otherwise but now overwhelming evidences show that pollution is responsible for global warming.<span />
