Stomach is a part of the digestive system that ..........
absorbs nutrients from food
converts solid food into liquid
delivers food into the esophagus.
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
Each of the following is considered a source of light except .........
the eye
the sun
the lamp
Surface that regularly reflects light ...............
dark with impurities
rough and dark
smooth and shiny
The organ responsible for the sense of sight____
the nose
the ear
Raise the thumb up or lower it down a kind of ___
codes
colors
waves
One of the behavioral adaptations that help the animal protect itself from enemies __
blend in
reproduction
extinction
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 light-reflecting materials like_______
paper
plastic
mirrors
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
Fish extracts oxygen out of the water by ...................
skin
gills
fins
When light falls on a dark surface_____
the light is refracted
the surface absorbs the light
light passes through it.
The ability to turn the head in all directions ,....................
Snakes
owl
dolphins
All of the following are components of the nervous system except____
heart
brain
nerves
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 .....................
ripping meat
escape.
find a shelter
.............. panting to lower her body temperature.
Bats
Lions
Foxes
Adaptations include changes that ...............in the environment.
reduce reproduction process
reduce life span for individuals
improve species survival
Humpback whales use singing for...............
having fun with whales
communication
hide from enemies
When you determine a sweet or bitter taste, you have used___
the tongue
To communicate through the sense of sight we need ............ ;
making sound
hearing music
availability of light
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 nervous system
the digestive system
the circulatory system
What is adaptation?
Feature owned by living things to help them survive.
The process by which new species appear.
A process of getting rid of harmful substances in living things.
Which of the following allows pass the light through it?
moon
glass
wood
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?
Wood
carton
transparent plastic.
Animals that live in a hot environment have ........................ ears to help her, and allow heat to escape to be cool.
small
short
long
Which of these examples of hid or a camouflage?
Camel hump
Camel broad feet
the fox is golden like its environment.
_____Your sensation of hot weather depends on sensory receptors in the
nose
eare
Animals can communicate with each other through____
sounds and lights
writing
talk
Animals can communicate with each other by... ......
Writing.
reading.
the Sound