Answer:
no
Explanation:
Arginine is an amino acid that has nitrogen in its structure. To remove nitrogen from arginine or other nitrogenous substances, mammals produce urea and eliminate it in the urine. However, birds eliminate nitrogen by producing uric acid, not urea.
Answer:
Check for chloroplasts for a plant cell and look for mitochondria's for an animal cell
When sound waves hit a solid surface they either reflect, refract, or absorb.
Echo's are caused by the reflection of sound waves.
All cells are surrounded by a Cell Membrane
