Which characteristic of four different dinosaur fossils makes a dinosaur most similar to the present-day birds? flexible wrist flapping ability flight feathers primitive feathers

An enzyme lowers the energy of activation. what does that mean?

Below are the three main organs that make up the plant body. what is the main function of the structure that is identified as b in the picture above? it anchors the plant.it produces food.it absorbs nutrients.it supports the plan

Which feature would you expect to find in a population in which sexual selection depends on male competition?