1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marizza181 [45]
3 years ago
6

Please help to explain why pine trees have needles instead of leaves and cacti have spines instead of leaves.

Biology
1 answer:
ladessa [460]3 years ago
7 0
Developed a way to protect their foliage. Instead of flat leaves, pine trees have needles<span>. These </span>needles<span> are the key to the Winter survival of the </span>pine tree<span>. </span>Needles<span> cut evaporation so</span>trees<span> can save water!
Cacti have sines instead of leaves because they help protect them from getting eaten and they don't need leaves because they store water inside themselves. 
They both have adapteations to help them servive in very harsh conditions. Cacti use their adaptations to survive in scourching heat and pine trees can servive in freezing cold.</span>
You might be interested in
Name at least four critters that might be pollinators
Elenna [48]
Four critters that are pollinators are
- Bumblebee
- Honeybee
- Rufous Hummingbird
- Flower fly
Hope this helps!
3 0
3 years ago
What are the levels of organization in a shark
nexus9112 [7]
Cell
Tissue
Organ 
Organ System
Organism

3 0
3 years ago
What determines the brightest of a star
AfilCa [17]
A star's brightness is determined by the distance away from earth.
6 0
3 years ago
Over long periods of time, tectonic forces can cause rocks to fold. what kind of stress causes folding?
lakkis [162]
A tension ik it is so a 
8 0
3 years ago
How does the process of smooth muscle contraction differ from contraction in skeletal muscle?
Lana71 [14]

Similar to the other types of muscle, smooth muscle contraction is caused by the sliding of myosin and actin filaments over each other. Calcium initiates contractions in a different way in a smooth muscle than in a skeletal muscle.

Smooth muscles use less energy to generate the given amount of force, can substain contractile force without fatigue & uses calcium from the sarcoplasic reticulum & extracellular space.

7 0
4 years ago
Other questions:
  • Why is the ability to respond to stimuli critical
    5·1 answer
  • A patient is not having daily bowel movements and has begun taking a laxative for this problem. what should the nurse educate th
    7·1 answer
  • Number 6 please help!
    13·1 answer
  • What can happen to the people who do not provide care for someone with alcohol poisoning, and that person dies?
    6·1 answer
  • Please me with this question?:))
    9·1 answer
  • Answer
    10·1 answer
  • When a parasite enters the body, basophils in the blood stream or mast cells found in other tissues release chemical signals. Th
    5·1 answer
  • Energy is stored in plants as??
    5·2 answers
  • Anybody on here 14 and is a girl
    9·2 answers
  • Fill in the blanks PLEASE I'll give brainliest, please
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!