Question

1. place an \a\ next to the abiotic factors and a \b\ next to the biotic factors.

____mangrove plants
____water
____sunlight
____phytoplankton
____dead tree
____humpback whale

Explanation:

To solve this, we first recall:

• Abiotic factors: Non - living components of an ecosystem (e.g., water, sunlight).
• Biotic factors: Living or once - living components of an ecosystem (e.g., plants, animals, dead organisms).

For Mangrove plants:

Mangrove plants are living organisms. So we put "B" next to it.

For Water:

Water is a non - living component of the ecosystem. So we put "A" next to it.

For Sunlight:

Sunlight is a non - living component (a form of energy, not a living thing). So we put "A" next to it.

For Phytoplankton:

Phytoplankton are living (they are microscopic plants/algae). So we put "B" next to it.

For Dead tree:

A dead tree was once a living organism, so it is a biotic factor (since it was part of a living system). So we put "B" next to it.

For Humpback Whale:

Humpback Whale is a living animal. So we put "B" next to it.

Answer:

B Mangrove plants
A Water
A Sunlight
B Phytoplankton
B Dead tree
B Humpback Whale