The phosphorus cycle

https://www.sciencelearn.org.nz/resources/961-the-phosphorus-cycle
Phosphorus is a chemical element found on Earth in numerous compound forms, such as the ...

Seed dispersal

https://www.sciencelearn.org.nz/resources/103-seed-dispersal
Plants make seeds that can grow into new plants, but if the seeds just fall to the ground under ...

Marine food webs

https://www.sciencelearn.org.nz/resources/143-marine-food-webs
Feeding relationships are often shown as simple food chains – in reality, these relationships ...

Ocean salinity

https://www.sciencelearn.org.nz/resources/686-ocean-salinity
There are many chemicals in seawater that make it salty. Most of them get there from rivers ...

Human impacts on marine environments

https://www.sciencelearn.org.nz/resources/144-human-impacts-on-marine-environments
Throughout human existence we have relied on the oceans – for food, as a waste dump, for ...

Pollination and fertilisation

https://www.sciencelearn.org.nz/resources/77-pollination-and-fertilisation
Sexual reproduction is a way of making a new individual by joining two special sex cells ...

The ocean and the carbon cycle

https://www.sciencelearn.org.nz/resources/689-the-ocean-and-the-carbon-cycle
The ocean plays an important role in the global carbon cycle. Carbon moves in and out of the ...

Adaptations of marine organisms

https://www.sciencelearn.org.nz/resources/142-adaptations-of-marine-organisms
Adaptation is an evolutionary process whereby an organism becomes increasingly well suited to ...

Cleaning up the oil spill

https://www.sciencelearn.org.nz/resources/1140-cleaning-up-the-oil-spill
On 5 October 2011, the cargo vessel Rena ran aground on the Astrolabe Reef. The ship was ...

Plant reproduction without seeds

https://www.sciencelearn.org.nz/resources/104-plant-reproduction-without-seeds
Not every plant grows from a seed. Some plants, like ferns and mosses, grow from spores. Other ...

Flowering plant life cycles

https://www.sciencelearn.org.nz/resources/82-flowering-plant-life-cycles
The flowers and fruit of flowering plants come and go as part of their life cycle. Some ...

Attracting pollinators

https://www.sciencelearn.org.nz/resources/80-attracting-pollinators
Flowering plants need to get pollen from one flower to another, either within a plant for ...

Poisonous animals in New Zealand

https://www.sciencelearn.org.nz/resources/370-poisonous-animals-in-new-zealand
New Zealand has a very small number of poisonous animals. These animals are also called ...

Plant reproduction

https://www.sciencelearn.org.nz/resources/100-plant-reproduction
Scientists divide plants into two main groups depending on whether they reproduce by seeds or ...

Methods of pollination

https://www.sciencelearn.org.nz/resources/102-methods-of-pollination
Flowering plants need to get pollen from one flower to another, either within a plant for ...

Ocean density

https://www.sciencelearn.org.nz/resources/687-ocean-density
The density of seawater plays a vital role in causing ocean currents and circulating heat ...

Poisons and toxins

https://www.sciencelearn.org.nz/resources/364-poisons-and-toxins
Poisons are substances that cause harm to organisms when sufficient quantities are absorbed ...

Toxins and food webs

https://www.sciencelearn.org.nz/resources/367-toxins-and-food-webs
All living things depend on one another to live. Animals eat plants and/or animals to survive ...

Ocean temperature

https://www.sciencelearn.org.nz/resources/707-ocean-temperature
The temperature of the ocean determines what form the water takes. Most of the ocean is liquid ...

Native bird adaptations

https://www.sciencelearn.org.nz/resources/1162-native-bird-adaptations
New Zealand separated from Gondwana around 65 million years ago. Due to the geographical ...

Environmental conditions affecting the sea

https://www.sciencelearn.org.nz/resources/141-environmental-conditions-affecting-the-sea
On land, the most important environmental conditions affecting organisms are rainfall and ...

Classifying marine organisms

https://www.sciencelearn.org.nz/resources/140-classifying-marine-organisms
Classification is an important tool used by scientists to show how organisms are related to ...

Measuring toxicity

https://www.sciencelearn.org.nz/resources/366-measuring-toxicity
Toxicity can be measured by the effect the substance has on an organism, a tissue or a cell. We ...

Adapting to marine habitats

https://www.sciencelearn.org.nz/resources/1126-adapting-to-marine-habitats
Being able to adapt is a matter of life or death. In a perfect world, organisms would not need ...
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