The hypothalamus acts as what aspect of many homeostatic feedback loops? A. Hormone
B. Controller
C. Sensor
D. Effector

I think the answer is C

Explanation:

the hypothalamus has a Negative Feedback Loop: The hypothalamus secretes corticotropin-releasing hormone. So I'm pretty sure the answer is  a sensor because it regulates the temperature of the body and energy maintenance, and in the process of memorizing and in stress control. It also modulates the endocrine system through its connections with the pituitary gland.

I hope this helps but i'm not 100% sure

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.