Answer: Measuring the amounts of radioactive elements in rocks let scientists useabsolute dating to give ages to each chunk of time on the geologic time scale. For example, they are now able to state that the Jurassic began about 200 million years ago and that it lasted for about 55 million years.
Explanation:
<span>These three different subsets of bacteria although all from the same family have very different qualities. They are related by their common biological mechanisms though.</span>
Answer: Roles of DNA polymerases and other replication enzymes. ... which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. ... Topoisomerase also plays an important maintenance role during DNA replication.
Explanation:
hard to explain
<span>tree and nest
If a robin builds a nest in a big tree, the robin benefits and the tree
is not helped or harmed. This type of symbiotic relationship is called
commensalism, and it is between the tree and the nest/Robin.
<span>There
are several types of biotic relationships that is occurring every
single moment in the ecosystem and commensalism is one. In contrast,
parasitism is the biotic relationship where one organism doesn't benefit
from the other and is harmed. In this scenario with human beings and
mosquitos, this phenomenon of interaction is distinguished as parasitism
where mosquitos draws blood that contains nutrients from the human
tissue to use it as its source of food and then leaves harmful
substances and bacteria in the human’s blood stream.<span> </span></span></span>
Answer:
431 y 412.
Explicación:
Zacharias Janssen fue el primer hombre que inventó el microscopio en el año 1590, mientras que Galileo Galilei fue el hombre que perfeccionó el microscopio en 1609. De esa manera, han pasado 431 años desde que se inventó el microscopio mientras que, por otro lado, 412 Han pasado años desde que se hizo la perfección del microscopio.