Which characteristic of four different dinosaur fossils makes a dinosaur most similar to the present-day birds? a) flexible wrist b) flapping ability < -- *i chose this answer c) flight feathers d) primitive feathers

B flapping ability so you were right

welp i got that wrong it is not b ;(

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation:

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.