
To review:
The reasons for the increase in the human population over last 150 years.
Introduction:
The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Explanation of Solution
The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.
As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.
The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.
Want to see more full solutions like this?
Chapter 14 Solutions
EBK BIOLOGY
- Anwser these Discussion Questions: Part One Why were the plants kept in the dark prior to the experiment? Why is this important? Why is it important to boil the leaf? Explain why it was necessary to use boiling alcohol? What is the purpose of the iodine? Part Two What was the purpose of keeping the leaf in the dark and then covering it with a cardboard cut-out? What conclusions can you draw from this part of the lab? Part Three 7. In this experiment what was the purpose of adding the soda lime? 8. Why was a sealed bag placed around each plant? 9. What happened in the control plants? 10. What was the result on photosynthesis? Part Four 11. Why was a variegated leaf used in this experiment? !2. What conclusions can you draw about starch production in a variegated leaf?arrow_forwardHow did the color differences between the two bacterial species you used in this experiment help you determine if the streak plate method you performed was successful?arrow_forwardseries of two-point crosses were carried out among six loci (a, b, c, d, e and f), producing the following recombination frequencies. According to the data below, the genes can be placed into how many different linkage groups? Loci a and b Percent Recombination 50 a and c 14 a and d 10 a and e 50 a and f 50 b and c 50 b and d 50 b and e 35 b and f 20 c and d 5 c and e 50 c and f 50 d and e 50 d and f 50 18 e and f Selected Answer: n6 Draw genetic maps for the linkage groups for the data in question #5. Please use the format given below to indicate the genetic distances. Z e.g. Linkage group 1=P____5 mu__Q____12 mu R 38 mu 5 Linkage group 2-X_____3 mu__Y_4 mu sanightarrow_forward
- What settings would being able to isolate individual bacteria colonies from a mixed bacterial culture be useful?arrow_forwardCan I get a handwritten answer please. I'm having a hard time understanding this process. Thanksarrow_forwardSay you get AATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGC 3ʹ and it is cleaved with Mspl restriction enzyme - how do I find how many fragments?arrow_forward
- Which marker does this DNA 5ʹ AATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGC 3ʹ show?arrow_forwardThe Z value of LOD for two genes is 4, what does it mean for linkage and inheritance?arrow_forwardBiology How will you make a 50-ul reaction mixture with 2uM primer DNA using 10 uM primer DNA stocksolution and water?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Essentials Health Info Management Principles/Prac...Health & NutritionISBN:9780357191651Author:BowiePublisher:CengageBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax




