Agardener wanted to produce a new variety of onion.
explain why sexual reproduction, rather than just taking a cutting could produce
new varieties of onion.

The influenza virus cause the flu, but not other diseases. why?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.