Answer:
<u>Homeostasis</u>
Explanation:
This is the ability of an organism to maintain constant conditions in the internal to the external environments. The most important conditions of the internal environment that must be kept constant include: osmotic pressure of blood, blood sugar, temperature and metabolic wastes.
Homeostasis can be maintained in the body through sweating to regulate temperature, lowering of hair, vasodilation of superficial blood vessel and animals living in very cold habitats have a particularly thick layer of subcutaneous fat which prevents heat loss
Without staining them you wouldn't be able to see them
Answer:
Option (2), (3) and (4).
Explanation:
Charophytes are the group of some green algae of fresh water. The cahrophyta can be included in both the division and super division. Embryophyta has been emerged from the charophyta.
A student confirm whether the algae is charophyte or not by looking at the specific features. The cahrophytes has well defined sexual characters and the structure of sperm cell, the presence of phragmoplast confirms the charophytes. The cellulose synthesizing ring complex is also present in charophytes.
Thus, the correct answer is option (2), (3) and (4).
Answer: Natural selection can act on traits determined by alternative alleles of a single gene ... hope this helps, this is one of many answers for this question!
<span>Answer: absence of xylem and phloem
hope this helps :3</span>
