A scientist repeats Mendel嚙編 experiment. The scientist got the following results: A table shows that 669 plants have purple flowers and 221 plants have white flowers. What is the ratio of purple flowers to white flowers? :1

Could someone me with number one you

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d