2. The sun is the principal source of energy in an ecosystem such as tropical rainforest. In your answer you should make a reference to name levels in food web (3 marks)

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.