A.
Which of the following is influenced only by heredity and not environmental factors?
obesity
b. diabetes
C. heart disease
d. muscular dystrophy
Please select the best answer from the choices provided
В
O O O O
D

blah

explanation:

bc blah

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.