- The kidneys of both sheep and fetal pigs have a bean shape.
- The coloration of both sheep and fetal pig kidneys is a reddish-brown hue.
- Both types of kidneys possess ducts that facilitate urine drainage into the ureters, allowing urine to exit the kidneys.
- A noticeable distinction between the kidneys of sheep and fetal pigs is that the sheep kidney has a greater thickness of fatty tissue.
Answer:

Explanation:
The pH formula is given by
![pH = -[log H+]\\](https://tex.z-dn.net/?f=pH%20%3D%20-%5Blog%20H%2B%5D%5C%5C)
It's also stated that each pH unit indicates a tenfold change in hydrogen ion concentration.
For lemon juice with a pH of 2, the hydrogen ion concentration is

While for pure water, which has a pH of
, the concentration is

Thus, the concentration of H+ ions in lemon juice is
times greater than in pure water.
Embryological evidence
Explanation:
Deuterostomes include echinoderms, hemichordates, and chordates. Despite their diverse body structures, they all feature a mouth that forms secondarily during embryonic development, thought to be a derived evolutionary trait connecting a common ancestor to all its descendants (a synapomorphy). This mouth originates from the ectoderm layer through invagination opposite the blastopore in the gastrula.
Regardless of the external conditions of the cell