Choose all the answers that apply. Check the statements that are true.

A hypothesis must be proven true in order for an experiment to be valid.
Electrons and protons are examples of cycles.
A valid experiment must have results that can be repeated.
Observations are the final stage of an experiment.
Science is based on fact.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Which represents a negative impact of technology

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.