Ch.3.4

Question 1

The ___________ of many ______________ kinds of living things is called _________________.

Answer 1

Existence, different, biodiversity

Question 2

Biodiversity can be studied at ___________ _______; we can study the biodiversity of the _________ _________ or of a __________ area such as a __________.

Answer 2

Different levels, whole Earth, small, pond

Question 3

_____________ _______________ [z] and ____________ _____________ [y] have the greatest biodiversity on Earth.

[z]are home to _______________________ of all kinds of living things although they only cover ________% of the Earth’s land surface.

[y] cover ___________________________ of the ocean floor, but they are home to more than ________% of marine living things.

Answer 3

Tropical rainforests, coral reefs
More than half, 6
Less than 1%, 25

Question 4

All living things in a habitat _____________ with each other and with the ______________ (including _____________, __________ and ____________) to form an ______________.

Answer 4

Interacts, environment, soil, air, water, ecosystem

Question 5

All the living things in an ecosystem are ________________ one each other. The loss of any one kind of living thing will ____________________________________________.

Answer 5

Interdependent, affect the whole ecosystem

Question 6

________________ is important for keeping the _______[x]________ _______[w]________. A [w] [x] can continue for a _________ time.

Answer 6

Biodiversity, ecosystem, sustainable, long

Question 7

three types of living things:
1.
2.
3.

Answer 7

Plants, microorganisms, animals

Question 8

Plants provide ____________ and ____________ for some animals. They give out _____________ for all living things to _____________, and their ____________ help to hold the ________ in place.

Answer 8

Food, shelter, oxygen, breathe, roots, soil

Question 9

Some microorganisms ___________ in the soil. They help _________ _________ __________ plants and animals and turn these into _____________. Plants absorb these _______________ for growth.

Answer 9

Live, break down dead, nutrients, nutrients

Question 10

Some microorganisms remove _______________ ____________ from water, thus _______________ the water for other living things.

Answer 10

Harmful substances, purifying

Question 11

Animal waste helps keep the soil _____________.
Some animals provide ___________ for other animals.
Some insects eg ________ feed on __________ in flowers.
~in return, they help _____________ ___________ __________ by spreading _____________ (Aka _________________)
Some animals eg _______________ live in the soil. Their ______________ helps keep the soil ___________ and ____________.

Answer 11

Fertile, food, bees, nectar, flowering plants reproduce, pollen, pollination, earthworms, movement, loose, moist

Question 12

Living things on Earth _______________ on each other for survival.

Answer 12

Depend

Question 13

Humans also ___________ on other living things for many of our needs, such as:
~_____________
~_______________
~____________

Answer 13

Depend, plants, medicine, food

Question 14

The number of bees are decreasing due to:
1.
2.
3.

Answer 14

Diseases, the use of pesticides, the loss of habitats

Question 15

If all bees die out, _________________________ of plants __________________________. Many animals that feed on plants ________________________________________. Humans will be affected because _________________________________________________________.

Answer 15

The biodiversity, will be reduced, will have no food and may die, we depend on plants and animals for food