1. Which are the two important roles of the atmosphere?

1 answer:

6 0

The important role of the atmosphere is to supply oxygen, water, carbon dioxide and nutrients. It also protects all living things from extreme temperatures and radiation (protects us from harmful solar rays).

You might be interested in

Abe knew from his anatomy class that there are three different kinds of muscle tissue in the body. He knew lifting weights would

Aleksandr [31]

Answer:

Three different kinds of muscles are -:

SKELETAL MUSCELES
CARDIAC MUSCLES
SMOOTH MUSCLES

Explanation:

SKELETAL MUSCLES -: There are long, cylindrical, and striated skeletal muscle cells. They are multi-nucleated, which means they have more than one nucleus. This is because from the fusion of embryonic myoblasts, they are created. Each nucleus controls the sarcoplasm's metabolic demands around it. There are high energy requirements for skeletal muscle cells, because they contain several mitochondria in order to generate adequate ATP. Examples of skeletal muscles: arms and legs- The muscles that belong to the arms and legs feature in pairs. Abdomen and Back- These muscles are connected to the various sets of skeletal muscles that run across the torso.
CARDIAC MUSCLES -: Cardiomyocytes have a short and narrow outline and are fairly rectangular. They are about 0.02 mm wide and 0.1 mm (millimetres) long, respectively. There are many sarcosomes in cardiomyocytes, which provide the required energy for contraction. Cardiomyocytes usually contain a single nucleus, unlike skeletal muscle cells. Cardiomyocytes, although they contain more sarcosomes, normally contain the same cell organelles as skeletal muscle cells. example - cardiac muscle is present in heart.
SMOOTH MUSCLES -: Smooth muscle cells have a single central nucleus and are spindle-shaped. They range in length from 10 to 600 μm (micrometers), and are the tiniest type of muscle cell. In the expansion of organs like the kidneys , lungs, and vagina, they are elastic and therefore essential. As in cardiac and skeletal muscle, the myofibrils of smooth muscle cells are not aligned, meaning they are not striated, hence the term smooth. example of smooth muscles -: Walls of blood vessels , Walls of stomach , Ureters , Intestines , In the aorta (tunica media layer), Iris of the eye. ,Prostate and Gastrointestinal Tract.

5 0

3 years ago

Rubric

Liula [17]

Answer:

ummmmm

Explanation:

Pls explain further

3 0

3 years ago

The nurse is explaining involution to a client who is pregnant with her first child. Which statement is the nurse correct to mak

julsineya [31]

The Nurse should say that during the pregnancy the breast feels pain and also abdominal pain. This all is general pain that happens to every woman in their pregnancy state.

Explanation:

Involution is the process that takes place during pregnancy time. It makes the uterus comfortable for childbirth.

As it produces a hormone called oxytocin. The mammary glands are becoming size for the production of milk.
Which is required for the baby. Pain also occurs in the back and also in the legs.

3 0

3 years ago

Do pollen grains have the same number of chromosomes as a regular plant cell?

finlep [7]

The pollen grain is actually the male gametophyte generation of seed plants. Inside the anther, pollen mother cells divide by meiosis to form pollen grains whose nuclei contain half the number of chromosomes characteristic of the parent plant.

(hope that helped answer the question)

8 0

3 years ago

2. What did you do differently to be successful without using your thumb?

klasskru [66]

Answer:

to be successful while not using my thumb, i used the rest of my fingers and my hand to grasp the object

Explanation:

6 0

3 years ago