Answer:
Charles Darwin was best known in the 19th century
Explanation:
This is an experiment where the researcher manipulates one variable, and control/randomizes the rest of the variables. It has a control group, the subjects have been randomly assigned between the groups, and the researcher only tests one effect at a time.
Out of the following given choices;
<span>A)
</span>They are all of the same species.<span>
B) They all require the same type of food.
C) They are part of a community.
D) They are abiotic factors in a forest.</span>
The answer is C. A community is
the summation of all the species population interacting in a habitat/ecosystem.
These interaction between the population could include commensalism, predation,
symbiosis, parasitism, and etcetera.
Chromosomes exchange genetic material in step 3.
<h3><u>Explanation</u>:</h3>
The meiosis is the type of cell division that takes place for gametogenesis. The meiosis has two phases - meiosis I and meiosis II.
The meiosis I has the events like crossing over and independent assortment which leads to the mixing of genes between homologous chromosome pairs and separation of homologous chromosome pairs. So the two cells that are produced from the meiosis I are genetically different. The step 3 shows the crossing over of prophase 1 of meiosis I. So, it shows the genetic difference between the offsprings and leads to genetic variation.
Answer:
4.22
Explanation:
pH scale ranges from 0-14. 0-7 being the acidic range with 0 being the most acidic, 7 -14 is the basic range with 14 being the most basic.
