Modern birds have feathers and can fly. when paleontologists discovered a fossil of archaeopteryx, a dinosaur with feathers, they suggested perhaps it could fly. what big idea in biology did they apply in this situation?

What power source is the best in order to comply with city restrictions

1. What is the test variable (independent variable) in this experiment? 2. What is the outcome variable (dependent variable) in this experimenti 3. What variables should Dante maintain constant? 4. What should Dante's conclusion be?

What is the definition of energy? a) melting, freezing, evaporating b) the ability to create a new substance c) the ability to work d) anything that bring about change

Within a narrow range of temperatures, S. marcescens produces a red pigment called prodigiosin. Although the ultimate purpose of the pigment is a mystery, it is known that at least 10 enzymes are required for its production.

What is found inside centrosomes

All ecosystems are affected by wildfires equally.

In order for an electrical message to be sent from the axon of one neuron to the dendrite of another neuron, it must transverse a space called the

Which object mos likely exerts the strongest gravitational pull on other objects

Which of the following is an inorganic compound? ammonia (NH3) glucose (C6H12O6) butane (C4H10) vinegar (C2H4O2)

Which type of fungal lung infection frequently results in productive cough with purulent sputum?