How might a bear be influenced by external factors in its environment?

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

Darwin’s hypothesis about how life changes over time is now called?