Ecosystems have trouble adjusting to short-term changes - This is false.
Eco system changes can be long term and short term. Few short-term environmental changes that can change an eco system are - drought, smog, volcanic eruptions, floods etc. An ecosystem can easily adapt to short-term changes. For example, after a forest fire plants can re-grow from their roots. Many species have features to help them cope with natural, short-term environmental changes.
Cell divison is necessary to replace cells that are worn and aging. Cells do not have an indefinite life span. Fo example, the life span of a red blood cell is about 120 days.
Answer: Yes, the students can conclude that a chemical reaction occurred because a new material of a different color formed on the bottom part of the metal strip.
Hope this helps!
This is as many as I can think of:
asexual: one parent, offspring is an exact copy, parent has both female and male parts, plants
Sexual- Two parents, offspring is a hybrid of parents, parents contain either male or female parts not both, animals
