A scientist wanted to observe the effects of altitude on the respiratory system of mammals.
Four different species of mammals were placed
in a chamber that underwent gradual changes in
pressure (measured in atmospheres, or atm) lo
simulate the atmosphere at high altitudes. After
5 minutes at each atmospheric pressure tested,
the number of breaths per minute (respiratory
rate) was determined for each fo the 4 mammals
while they remained at rest. The data from the
experiment are shown in the following graph.
(Note: Larger animals typically have slower
respiratory rates. Higher respiratory rates
indicate rapid breathing, a sign of distress in
some mammals.)

the answer is d.) homologous; have mammary glands

it is either c or d and i know for sure it is not a or b

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a

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.