Which of the following changes should be implemented to achieve sustainable farming while also protecting the environment? a)tilling the ground to remove weeds and create uniform crops b)clearing land for agriculture by cutting down trees instead of burning them c)growing the same crop in a given field each year to improve efficiency d)using predatory insects to control pests that destroy crops instead of pesticides

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.