CK-12 Foundation
Ck 12: Life Science: 11.63 Immunity
Learn how vaccines create immunity against pathogenic infections.
CK-12 Foundation
Ck 12: Life Science: 11.62 Humoral Response
Learn about the human body's immune response to pathogens.
CK-12 Foundation
Ck 12: Life Science: 11.71 Fertilization
Learn about the fertilization of an egg and sperm.
CK-12 Foundation
Ck 12: Life Science: 11.69 Egg Cells
Understand the egg cells, and how they develop into a human being.
CK-12 Foundation
Ck 12: Life Science: 11.68 Female Reproductive Organs
Learn about and understand the female reproductive organs.
CK-12 Foundation
Ck 12: Life Science: 11.67 Female Reproductive System
Understand the development of the female reproductive system.
CK-12 Foundation
Ck 12: Life Science: 11.65 Male Reproductive Organs
Understand the development of the male reproductive system.
CK-12 Foundation
Ck 12: Life Science: 11.64 Male Reproductive System
Understand the role the male reproductive system plays in human reproduction.
CK-12 Foundation
Ck 12: Life Science: 12.11 Habitat and Niche
See how organisms each have their own role in the ecosystem.
CK-12 Foundation
Ck 12: Life Science: 11.78 Reproductive System Health
Learn how to keep reproductive systems healthy.
CK-12 Foundation
Ck 12: Life Science: 11.77 Reproductive System Disorders
Read about some of the most common reproductive disorders in both males and females.
CK-12 Foundation
Ck 12: Life Science: 11.76 St Is
Learn about the dangers of sexually transmitted infections.
CK-12 Foundation
Ck 12: Life Science: 12.8 Predation
Understand the predator-prey relationship in an ecosystem.
CK-12 Foundation
Ck 12: Life Science: 12.7 Competition
Understand how competition affects the populations in an ecosystem.
CK-12 Foundation
Ck 12: Life Science: 12.6 Human Population
Understand stages of human population growth.
CK-12 Foundation
Ck 12: Life Science: 12.5 Population Growth Limits
Discover how ecosystems respond to population growth limits.
CK-12 Foundation
Ck 12: Life Science: 12.10 Ecosystems
See how living and nonliving things exist together in an ecosystem.
CK-12 Foundation
Ck 12: Life Science: 12.9 Symbiosis
Learn about the many types of symbiotic relationships in an ecosystem.
CK-12 Foundation
Ck 12: Life Science: 12.4 Population Growth Patterns
Explore growth patterns in wildlife populations.
CK-12 Foundation
Ck 12: Life Science: 12.3 Population
Discover what a population is in regards to an ecosystem.
CK-12 Foundation
Ck 12: Life Science: 12.2 Ecological Organization
See how ecosystems are organized into several different levels, and an ecosystem can be studied at any one of the various levels of organization.
CK-12 Foundation
Ck 12: Life Science: 12.1 Ecology Overview
Discover how organisms interact in their environment.
CK-12 Foundation
Ck 12: Life Science: 11.25 Blood Pressure
Take a look at blood pressure in the human body.