Answer:
Horizon A es deficiente en minerales.
Horizon B sufre la menor cantidad de cambios.
La roca madre se encuentra debajo de las capas del suelo.
Explanation:
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point. If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples of:
a. positive feedback
b. effectors
c. sensors
d. negative feedback
Answer:
d. negative feedback
Explanation:
Negative feedback responses are the ones that counteract the change. Any alterations in the internal body conditions such as blood calcium levels are sensed by receptors. The information is sent to the brain which in turn commands the effectors such as endocrine glands to secrete the required hormones to restore the normal conditions. Here, changes in the calcium levels are counteracted by the secretion of calcitonin and parathyroid hormones and the calcium is maintained within a narrow range. This represents negative feedback.
I can tell U something to help U with ur paragraph, like no ur mass won't change, and ur weight will change because Weight = mass X gravity, and the gravity on the moon is less than that's on earth so ur weight will also decrease, hope that helped
The answer is B) These illustrations show the progressive development of the forelimb in a species over time. One example of how life has changed over time.
