[4.2] Q1: what does natural selection help humans explain?

[4.2] Q2: what is natural selection?

[4.2] Q3: what is the meaning of a selective agent ?

[4.2] Q4: what is the definition of selection pressure ?

[4.2] Q5: what is the difference between abiotic and biotic factors ?

[4.1] Q6: define sexual selection?

[4.1] Q7: what was the peppered moth ?

[4.1] Q8: what are pesticides used for ?

[4.1] Q9: what is the meaning of resistance ?

[4.1] Q10: define the word antibiotics ?

[4.1] Q11: what does biodiversity mean?

[4.1] Q12: how did Alexander Fleming find a way to kill bacteria ?

[4.1] Q13: name a dangerous type of bacteria ?

[4.1] Q14: define biodiversity ?

[4.1] Q14: what does speciation mean ?

[4.1] Q15: what are the three steps to the process of speciation?