Sameh drives his bike and while that he hears a car behind him, he turns away so as not to hit it. The system that received a signal made Sameh realize that is .....
the digestive system
the circulatory system
the nervous system
What happens to living things that can't adapt to the conditions of its environment
keep their number constant
they can survive in the environment
they can't stay in the environment
To communicate through the sense of sight we need ............ ;
making sound
hearing music
availability of light
Animals can communicate with each other through____
writing
sounds and lights
talk
When you put your hand on a hot surface, the brain sends a message to the muscles and the action that comes from you immediately after it is to...
pull your hand away from a hot
Keep placing your hand
You will do nothing
Raise the thumb up or lower it down a kind of ___
colors
codes
waves
Animals can communicate with each other by... ......
the Sound
reading.
Writing.
The light-reflecting materials like_______
mirrors
plastic
paper
Adel wanted to make a suitable box through which he could see what was inside without having to open it. What material should be used?
transparent plastic.
carton
Wood
.............. panting to lower her body temperature.
Foxes
Bats
Lions
When light falls on a dark surface_____
light passes through it.
the light is refracted
the surface absorbs the light
Which of the following allows pass the light through it?
glass
wood
moon
Our eyes help us see what's around us. What is the organ responsible for perceiving what we see with our eyes? ...........
The brain
The stomach
The esophagus.
The ability to turn the head in all directions ,....................
dolphins
Snakes
owl
_____Your sensation of hot weather depends on sensory receptors in the
eare
skin
nose
Which of these examples of hid or a camouflage?
the fox is golden like its environment.
Camel hump
Camel broad feet
Adaptations include changes that ...............in the environment.
improve species survival
reduce life span for individuals
reduce reproduction process
When you determine a sweet or bitter taste, you have used___
the ear
the tongue
the nose
Animals that live in a hot environment have ........................ ears to help her, and allow heat to escape to be cool.
long
small
short
What feature of light helps you see yourself in the mirror?
reflection
short rays
refraction
Eagle is bird of prey (who eats meat). Its beak is strong and sharp. This structural adaptation helps it to .....................
escape.
ripping meat
find a shelter
Each of the following is considered a source of light except .........
the sun
the eye
the lamp
What is adaptation?
The process by which new species appear.
Feature owned by living things to help them survive.
A process of getting rid of harmful substances in living things.
Surface that regularly reflects light ...............
smooth and shiny
dark with impurities
rough and dark
The organ responsible for the sense of sight____
All of the following are components of the nervous system except____
heart
nerves
brain
Stomach is a part of the digestive system that ..........
absorbs nutrients from food
delivers food into the esophagus.
converts solid food into liquid
Humpback whales use singing for...............
communication
hide from enemies
having fun with whales
One of the behavioral adaptations that help the animal protect itself from enemies __
reproduction
blend in
extinction
Fish extracts oxygen out of the water by ...................
gills
fins