Enumerati caracteristicile care fac din rezervatia delta dunarii un unicat ecologic.

1. Are peste 300 de specii de pasari

2.Este singura rezervatie naturala unde traieste cainele enot

3. Sunt specii de pesti care depun icre negre

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !