Answer:
<em>The statement that is incorrect is :</em>
<em>Robert wanted to see if his theory was true that cigarette smoke will influence web-building in spiders.</em>
Explanation:
A theory can be described as a descriptive explanation of a phenomenon which is supported by valid experiments and careful examination of facts. As Robert, has not conducted any experiments nor has proved his study with reference to facts, hence it cannot be considered as a theory.
Robert wanted to see if his observation was true that cigarette smoke will influence web-building in spiders will be the correct statement that could be used.
Answer:
D. Using only geothermal energy is a sustainable practice.
Explanation:
Geothermal energy is heat derived within the sub-surface of the earth.
<span>Answer:
an FfxFf cross would produce- FF Ff Ff ff.
Genotype: 1:2:1 (just look at the number of different pairs- 1 FF, 2 Ff's, and 1 ff.)
Phenotype: 3:1 (because all the pairs with a capital F will appear, the only one that will not be expressed is ff, and there are FF, Ff, Ff which all have capital "F". so its 3:1.)</span>
Answer:
The correct answer is: Meiosis makes it possible for a zygote to have the correct number of chromosomes.
Explanation:
Meiosis is a type of cell division used by reproducing organisms to produce the gametes (as sperm or egg cells). It has two rounds of division that results in four cells with one copy of each chromosome.
Before the division, genetic material from each chromosome is crossed over and creates new combinations of code on each chromosome. During fertilization, the cells produced by meiosis will conjoin to create a cell with copies of each chromosome again, the zygote.
7,8,6,5,4,3,2,1
Working backwards (to get the oldest), we have layer 1 forming first, then 2 above it, then 3. 4, 5, and 6 formed and then a fault caused the right side to slide down. 8 is intrusive, you can tell it's newer than 1, 2, 3, 4, 5, and 6 because it reaches all of those layers. You can tell 7 is the youngest layer because it formed after the fault (it's not split like 4, 5, and 6) and after 8's intrusion (because 8 doesn't reach it).
"doesn't reach it" means it isn't in that layer
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