NATURAL SELECTION. NATURAL SELECTION IN INSECTS INTRODUCTION LABORATORY SIMULATION Lab Data х G G2 G Released G4 G 250 125 88 83 76 29 Typica Carbonaria 750 510 735 885 1042 1406 Total 1000 635 823 968 1118 1435 Phenotype Frequency Color Initial Frequency Frequency GS Typica White 0.25 Carbonaria Black 0.75 Allele Frequency Allele Initial Allele Frequency Gs Allele Frequency 9 d 0.50 р D 0.50 Genotype Frequency Moths Genotype Color Moths Released Initial Frequency Frequency G5 Number of Moths Gs dd White 250 Typica Carbonaria 0.25 q? 2pg p? Dd Black 500 0.50 Carbonaria DD Black 250 0.25 SHO

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

What is the ecological role of food chains and food webs

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.