Question

ब्लड ग्रुप की खोज किसने की थी ​

Answer 1

Explanation:

An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.

Answer 2

Answer:

सन ,1901 में लैंडस्टेनर ने में कॉम्मन ब्लड ग्रुप A, B और O की खोज