What is responsible for identifying foreign invaders and remains in the system for a long period of time?

antigens

red blood cells

lymph nodes

axons

Imagine we reach the year 2050 and we have surpassed the the projected global population. World wide we are running out of fresh water. Discuss how the human population may form a new species through evolution.

What is the characteristics of both living and nonliving things

Which would take more force to move over ice:a sled with a rough metal bottom or a sled with a smooth metal bottom? why?

To what class do honest bees belong

The distance of a wave crest from its resting. position is its. out of A. Wavelength B. Amplitude C. Height

Part 1: Universal solvent Describe what happens in each beaker.

What will likely happen to the body if the joints are stiff, infected or not functioning as expected?

A child with a bloated belly, thin hair, and an inability to concentrate may be suffering from malnutrition

In most species, the female frog lays her eggs directly in the water as a male clasps her back and releases sperm. The fertilized eggs hatch into legless, aquatic tadpoles. Most tadpoles feed on algae, and have gills.

Part 2: Research one major hurricane, category 4 or greater, from any time period. In two or more complete sentences, describe the hurricane. Include the name of the hurricane, date, location, and category.