Which two embryos show the strongest structural and developmental similarities in their earliest stage of life?

a. chicken and fish
b. sea star and human
c. leech and frog
d. earthworm and snake

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

What is the farthest destination to date for a human spaceflight mission?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from