Answer:
-documenting species.
Explanation:
In mid 19th century, the main concern of marine scientists was the collection description, and cataloging of marine organisms.
Scientists used different methods in the collection of specimen
This were:
- Marine biologists adapted traditional dredges and trawls to collect specimens from the ocean floor.
- Hoop nets were used to secure free-swimming animals.
- New instruments for collecting water samples and obtaining.
- Temperature information at any desired depth were also developed.
In the late 19th century, the focus of marine scientists began to shift from collecting and cataloging to systematic analysis of marine ecosystems and the ecological roles and behavior of marine life.
Answer: Our oceans cover more than 70 per cent of the Earth's surface.
The majority of life on Earth is aquatic.
Less than five per cent of the planet's oceans have been explored.
The world's longest mountain chain is underwater.
There are more historic artefacts under the sea than in all of the world's museums.
Answer:
Explanation:
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
<span>Right limbs. It is because there is a reciprocal relationship between limbs and hemispheres of brain. The left part of the brain controls the right part of the body and right part of brain controls the left part of the body.</span>
