Answer:
A) central
Explanation:
The lymphatic system plays a major role in specific immune responses. The lymphatic system is composed of lymph, lymphatic vessels, and lymphatic organs (bone marrow, thymus, lymph nodes, spleen, etc). These lymphatic organs help to produce and repair immune cells including lymphocytes (T cells and B cells), monocytes, and plasma cells that generate antibodies against specific pathogens. The lymphatic organs can be classified into 1-primary (central) lymphoid organs, i.e., bone marrow and thymus, that produce lymphocytes and 2-secondary lymphoid organs, i.e., spleen, lymph nodes, and tonsils, that filter out and destroy undesired pathogens. The central lymphoid organs are sites where lymphocytes can divide and proliferate.
Answer:
Balanced diet with enough nutrients and exercise.
Explanation:
In order to manage our weight, we would have to combine a diet and exercise. Also, it's very important how much calories we take, how much time we sleep, and what time we eat our meals.
Healthy and balanced diet does almost 70 % of the work when it comes to both losing and maintaining wanted weight, the 30% is the workout.
Fats, carbs and proteins are main helpers when it comes to providing our body with enough energy.
If we want to reduce the excess of the fats in our body, we would have to adapt both our diet and exercise so they can help us reach the goal we're looking for.
Calorie intake should be lowered for at least 25 % and we should stick to the golden rule of 10,000 steps a day, which will give us great results.
A- Always wear your seat belt! It could save your life!
I think it is natural selection. genetic variation also could be a factor for physical variation over the years.
Answer:
C. 3
Explanation:
An embryo forms three distinct cell layers, and each layer develops into different types of cells and organs.
