If a species of animal evolves over generations to grow a large fan-blade like growth on its back to catch the wind and cool its body, this would be an example of responding to ________.
A. adaptation
B. selection pressure
C. climate change
D. natural selection
Answer: B
You might also like to view...
Tom gets a cut on his hand. After several days he notes swelling, pain, heat, and redness. Upon opening the wound to relieve the pressure, the presence of pus is noted. What has happened to the wound?
What will be an ideal response
The posterior pituitary secretes _________.
A. prolactin (PRL) B. adrenocorticotropic hormone (ACTH) C. oxytocin (OT) D. thyroid hormone (TH) E. growth hormone (GH)
The gelatinous material found in the posterior cavity is the
A) vitreous humor. B) aqueous humor. C) ora serrata. D) perilymph. E) tears.
Before B cells secrete antibodies, they differentiate into ________
A) macrophages B) T cells C) antigen-presenting cells D) plasma cells E) stem cells