Answer:
The immune system is closely associated with the lymphatic system
Explanation:
The endocrine system is a organ system that produce and secrete hormones all over the body. All the organ systems are interconnected and depend on each other and can be composed of different types of cells and tissues. But is it true that the immune system is closely associated with the lymphatic system because the lymphatic system rid the body out of toxins.
Yoyr muscles will switch to anaerobic respiration and produce lactic acid
Explanation:
Like most stars in our universe, the Sun is on the main sequence stage of its life. This means nuclear fusion reactions in its core fused hydrogen into helium. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun. Currently it has more than 72% hydrogen.
Answer:
The correct answer is option c, that is, variation.
Explanation:
In the given case, the gravel mix is to be selected on the basis of the size of pebbles, which is analogous to the organism selected in nature. In the given question, the sorting machine is analogous to the environment, that is, a selective force.
Like a specific environment permits the organisms exhibiting specific traits. For example, in a desert where the environment is hot and dry, only the species exhibiting the tendency to conserve water can thrive, similarly sorting machine will permit to distinguish gravel on the basis of the pebble size. Thus, different size of pebble resembles variation.
Bacteria and birds both are organisms
