About how many years ago did photosynthesis begin in the ocean?
A2000-3000 Million year
B2500 -3000 Million year
C2000-3500 Million year
D2500-3500 Million year
A2000-3000 Million year
B2500 -3000 Million year
C2000-3500 Million year
D2500-3500 Million year
Related Questions:
Which of the following are the layers of the earth?
രേഖാംശവുമായി ബന്ധപ്പെട്ട് ശരിയാ യതേത് ?
Choose the correct statement(s) regarding the composition of Earth's internal layers:
The crust is rich in silica and aluminum (SIAL).
The mantle is composed predominantly of nickel and iron.