In horses, black coats (B) are dominant to chestnut coats (b). Trotting (1) is also dominant to pacing (t). If a homozygous black pacer
(BBtt) is mated to a homozygous chestnut trotter (bbTT), what percent of the offspring will have bbtt?

0%

Explanation:

Both alleles appear homozygous dominant in one of the parents, therefore if you cross them in a punnett square all will be heterozygous.

d.

explanation:

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.