What is the difference between external and internal fertilization

Which internal energy source is the most important in continuing to heat the terrestrial planets today?

Why does an organism need energy and a constant supply of materials?

What are the constituents of DNA? a. Proteins and sugars b. Sugars, phosphates, and nitrogenous bases c. Sugars and lipids d. Lipids, nitrogenous bases, and proteins

Which term describes the process by which a single strand of dna serves as a template for the synthesis of an rna molecule?

Nuclear pores have proteins that open and close, controlling flow of cell solutions and molecules in and out of the nuclear envelope (a double-thick membrane). in this, nuclear pores are similar in structure and function to

What causes remodeling, or pruning, during middle childhood? how is this process different in each individual child?

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.