Ecology 1
Soil nutrients, competition, disease, and human activities are all factors that regulate the deer population in North Carolina. Which factors will increase when the deer population increases?
Soil nutrients and competition
Which of the following are chemical changes?
An egg is cracked, Food is digested, Butter is spread on warm toast, An egg is cookedFood is digested, An egg is cooked
A student listed some elements of a grassland biome.
Air, Grass, Insects, Soil, Water
Which factors are biotic?
Grass and Insects
A student cuts a piece of paper into three equal pieces (X, Y, and Z). The student rips sheet X into small pieces, burns sheet Y to ash, and crumples sheet Z into a ball. What evidence from sheets X and Z indicates that a physical change occurs?
The chemical properties of the substances before and after the change remain the same.
A gazelle is a natural prey of a cheetah. What happens to the population of gazelles when the population of cheetahs decreases?
The population of gazelles will increase.
If 76.5 grams of vinegar was reacted with 23.5 grams of baking soda and the products had a mass of 98.25 grams, was mass conserved? did this reaction occur in an open or closed system?
Mass was not conserved, open system.
What is the main function of protein in the body?
Building and repairing body tissues
How do liquid water, ice, and water vapor differ from each other?
They are made of the same molecule moving in different ways.
Select the two processes that are part of the Carbon Cycle.
1. respiration, 2. reproduction, 3. evaporation, 4. photosynthesis, 5. precipitation
1. Respiration and 4. Photosynthesis
When two liquids react to form a solid what is that solid called?
A precipitate