Biosphere: All living things
Lithosphere: The crust and outer mantle of Earth
Atmosphere: The air and gasses that surround Earth
Hydrosphere: All water on Earth
The cell wall is a rigid organelle composed of cellulose and lying just outside the cell membrane. The cell wall gives the plant cell it's box-like shape. it also protects the cell. The cell wall contains pores which allow materials to pass to and from the cell membrane.
Answer:
The oxygenated blood enters into the heart by pulmonary veins into the left auricle, then the left ventricle. Then this RBC enters the aortic valve and moves upward.
It enters the aorta and from the aorta to aortic vessels. From aortic vessels, the blood goes to descending aorta. This supplies RBC to different tissue parts.
From descending aorta the blood flows to iliac arteries which are further branched into several arteries, which supply blood to lower part of the body i.e. legs, pelvis.
The subclavian artery provides blood to hands and shoulders, hands. Left and right carotid arteries supply blood to the brain from the heart.
To find the similarities and differences in organisms by using possible chromosome and physical characteristics.
<span>Answer: Sudden infant death
Explanation: Miscarriage and still birth is the tragic event that occurs to her offspring. other deformities being cleft lip, low birth weight, heart problems. Miscarriages occur during the first three months of pregnancy. Still birth happens after 20 weeks of gestation.</span>
