Answer: Cytotoxic T cells
Explanation:
A Cytotoxic T cell is a cell whose activation is mainly aimed at destroying cells that are infected by virus. It is a type of white blood cells that destroys cancerous cells or cells that are impaired especially by viruses. A Cytotoxic cell is also known as T-killer cells, Cytolytic T cells, T lymphocyte.
Cytotoxic T cells destroy target cells by prearranged apoptoses.
Answer:
They are clastic sedimentary rocks
Explanation:
Sandstones, siltstones and shales are all clastic sedimentary rocks.
Clasitc sedimentary rocks are derived from other rock types.
These rock types typically forms from the suspended and bed load of erosion. The weathering of rocks provides the materials that forms these rock types.
The difference between the three rock types is based on their size. Shales are the finest while sandstones are made up of sandsized particles. Siltstones are in the middle.
Answer:
below
Explanation:
Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s)
Answer:
Option c
Explanation:
Sexuality is something that is not related to the biological/physical make of an individual. However, it defines the sexual thoughts, behavior and attractions/liking towards others. Everything irrespective of its type i.e physical, sexual and emotional contributes to defining the sexual attraction, behavior or linking is termed as sexuality. It defines a person and creates positive and liberating experiences. There are basically three types of sexuality – homosexuality, heterosexuality and asexuality
Hence, option C is correct
Answer;
This is because greenhouse gases prevent heat which is received from the sun from being radiated out into space.
Explanation;
Green house gases are gases that are emitted into the environment that are capable of absorbing infrared radiation, and thus trapping and holding heat in the atmosphere. The increase of heat in the atmosphere contributes to higher temperatures and causes the greenhouse effect, which results to global warming. Examples of these gases include, carbon dioxide, methane, nitrous oxide, ozone and CFCs among others.