Item 4 How can humans increase the rate of endangered or extinct species? pass more laws about land use
introduce new predators to an environment
reduce environmental impacts
build and populate more zoos

Are substances released into the environment that in excess amounts cause damage

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed