Question

A group of scientists is involved in genetically modifying a food crop to make it resistant to a certain species of insect pests. They exposed a sample of the crop to twenty of the insects and found it to be resistant. How can the scientists best increase the validity of their study?




A publish their results
B carry out more trials
C use different food crops
D use two control groups

Answer 1

help me pls

Answer 2

What do you think???

Answer 3

b

Answer 4

d

Answer 5

The embryo inside a chicken egg is developing a beak and wings seven days after fertilization. Which statement best describes what is taking place inside the egg?




A Enzyme activity and cell production are decreasing.
B Cell numbers and specialized tissues are increasing.
C Gamete production and embryo size are increasing.
D Cell differentiation and embryo metabolism are decreasing