Why did Dr. Erwin focus on tropical forests to estimate the total number of animal species in the world?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

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

Mitosis creates two identical daughter cells from one parent cell creates four nonidentical daughter cells from one parent cell is the most common type of reproduction for bacteria is the process by which male and female reproductive cells are created