Ecosystems 2

Unir: Insects are very important to ecosystems. But chemicals from farms are killing them. They´re at the bottom of food chains. So when insects die, there are problems for other animals in the food chain.

How do living things interact in an ecosystem? / ¿Cómo interactúan los seres vivos en un ecosistema?. community. shared environment. small. puddle. big. forest. living things. non-living things. fish. wind.

Unir: soil. frog. bird. insect. rocks. plants. bear. trees. worm. deer.

Unir: Non-living and living things interact in a ecosystem. Living things are called biotic factors. Non-living things are called abiotic factors. Abiotic factors are important in an ecosystem because living things (biotic factors) need abiotic factors to grow, eat and reproduce.

Unir: living things are called... non-living things are called...

Unir: Sunlight provides energy for plants to grow. Wind carries seeds from plants to other places to grow. All living things need water to survive and grow. Living things need oxygen for respiration.

Unir: The _______helps seeds travel. Living things need________to grow. Some animals and plants live in this. Living things need_______for respiration. __________provides energy for plants to grow.

Unir: An ecosystems is healthy when there is balance and biodiversity. Thins means there are lots of different animal and plant species. Human activity and environmental changes can affect the balance and ecosystem. This can cause many problems.

Unir: We use going to talk about future events. is going to. are going to. isn´t going to. aren´t going to.

Unir: The temperature is getting hotter. The ice_______melt. The water is polluted. The fish _________get sick or die. The grass is dying. The animals ________have any food to eat.