___ is a tropical storm that has winds of 119 km/h or higher.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Por qué crees que los huevos con cáscara se llaman amnióticos?

When one dna molecule is copied to make two dna molecules, the new dna contains a) 25% of the parent dna. b) 50% of the parent dna. c) 75% of the parent dna. d) 100% of the parent dna. e) none of the parent dna.