The diagram shows a chicken embryo and a human
embryo.

which is best supported by the diagram

a. because their embryos have tails, chickens and
humans do not likely share a common ancestor with
fish

b. because their embryos have structures similar to
gills, chickens and humans likely share a common
ancestor with fish.

c. chickens and humans have homologous structures
as embryos, so they are not likely related to each
other.

d. chickens and humans have homologous structures
as embryos, so they are not likely related to any other
organisms.

The correct option is B) Because their embryos have structures similar to

gills, chickens and humans likely share a common  ancestor with fish.

Explanation:

Evolutionary studies show common traits which are present among organisms of different species. Based on these traits, we can tell that which species might have shared common ancestors in the past.

In the structure shown above, we can see that the embryo of a human and a chicken have a structure  similar to the gills of fishes. This shows that these organisms might have shared a common ancestor in the past.

mark him as !

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o