A sedimentary rock containing a fern fossil has been found. What does this tell you about the area at the time the rock was formed

A the area was cold

B the area was hot

C the area was on land

D the area was covered by an ocean

What is the name of a contracting unit of skeletal muscle?

Differences between prokaryotic and eukaryotic promoters?

Stage 1 of delivery averages about 8 hours but may be longer for first-time mothers. a. True b. False

What are two ways that mountains form?

The following is a special trapezoid. Given AB is parallel to DC and m∠A = 110° Find the measure of ∠D.

What is the outermost structure that surrounds and supports plant and fungal cells?]

The sun is A. luminous; it gives off its own light. B. illuminated; it gives off its own light. C. luminous; it reflects light.

An increase in a herbivore populations in an ecosystem will soon lead to

This aquatic area is one of the most productive on Earth. More organic matter is created ere each year than comparably-sized areas of forest, grassland, or agricultural land. This body of water is a (n) A) estuary. B) lake. C) river. D) swamp.

The type of relationship described could best be classified as one of