Question

which characteristic of pollen makes it a good marker in the fossil record about earths history?
pollen is only produced in certain climates and at certain elevations.
pollen is produced in large amounts by plants, so its easy to find.
certain pollen-producing plants grow in certain climates better than others.
pollen is identical for every plant, making it a good marker for plant life.

Explanation:

• Pollen is produced in large quantities by plants. This abundance increases the likelihood of pollen being preserved in the fossil record.
• Different pollen - producing plants have different climate preferences. By analyzing the types of pollen in a fossil layer, scientists can infer the past climate conditions.
• Pollen is not identical for every plant. Each plant species has unique pollen characteristics.
• While pollen is not only produced in certain climates and elevations (many plants produce pollen in a wide range of conditions), the key aspect for it being a good fossil marker is its production in large amounts (so it is more likely to be preserved) and the fact that certain pollen - producing plants grow better in certain climates (allowing for climate reconstruction).

Answer:

Certain pollen - producing plants grow in certain climates better than others.