Answer:
provisioning, such as the production of food and water; regulating, such as the control of climate and disease; supporting, such as nutrient cycles and oxygen production; and cultural, such as spiritual and recreational benefits.
Explanation:
Answer:
B
Explanation:
When the sun shines evenly on Earth, both hemispheres are experiencing either fall or spring.
Earth orbits the Sun counterclockwise and in position A the southern hemisphere is experiencing summer, so if the options are in order, the southern hemisphere is experiencing spring in position B.
... I didn't see the picture when I wrote this answer, I still got it right though!
When an antigen invades a mammals body, specific immune cells engulf and ingest it. Some of the digested pieces are displayed on the cells bodies, the next step will be that B cells are activated and release antibodies. The correct answer is A.
The correct answer is a - silicon dioxide.
Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.
Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.
Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.
The magnitude of change in body composition after exercise training is most closely related to total energy expenditure. Energy expenditure is the amount of energy that a person needs to carry out a physical function such as breathing, circulating blood, digesting food, or physical movement. The total daily energy expenditure is therefore the total number of calories burned each day by the body.