What must the grasses be able to do to survive? A The grasses must be able to outcompete cacti and yucca plants for shelter from storms. B The grasses must be able to outcompete cacti and yucca plants for minerals in mountain rocks. C The grasses must be able to outcompete cacti and yucca plants for shade. D The grasses must be able to outcompete cacti and yucca plants for water. Page 3 / 18