Answer:
Evaporation and Transpiration
Explanation:
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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When insects fly, they expend more energy and consume more oxygen as compared to their state of rest. Insects have a tubular breathing system called tracheae, instead of lungs. The action of flight muscles pumps air through the trachea. This is how they generate extra energy while flying.
Answer:
B) The Light Microscope
Explanation:
Using a light microscope, one can view cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane. Light microscopes use lenses and light to magnify cell parts. However, they usually can achieve a maximum of 2000x magnification which is not sufficient to see many other tiny organelles.
Answer:
10%
Explanation:
The distance between the given two loci is 20 mu. This means that the recombination frequency between these two loci is 20% and the heterozygote will form 20% recombinant gametes and rest 80% parental type gametes. Therefore, the heterozygous woman AB/ab will form a total of 20% recombinant gametes. The proportion of each recombinant gamete will be 20/2= 10%.
Gametes formed by the woman= 10% Ab, 10% aB, 40% AB, and 40% ab
Gametes formed by the man= All ab (since the man is homozygous for both loci).
Therefore, proportion of Ab/ab genotype= 10% Ab (female gamete) x ab (male gamete)= 10% Ab/ab
