I believe that the central stalks are modified stems used for water storage and spines are modified leaves used for protection. Desert environment is normally hot and warm and therefore plants and animals have to have a mechanism to conserve water, the plants are very different such that they are often swollen, spiny, and have tiny leaves that are rarely bright green. These are as a results of adaptations to challenges of the desert.
Crocodiles care for their young and have a four-chambered heart.
Answer:
B. Straight away from the source
Explanation:
In an isotropic medium, light always travels in a straight line away from the source.
Answer:
MSG is short for monosodium glutamate. It is common food addictive-with the e-number E621 that is used to enhance flavor.
Explanation:
MSG is derived from the amino acid glutamate or glutamic acid, which is one of the most abundant amino acids in nature.
" As we follow along on a cladogram, it will split at nodes into two or more internodes a specitation event (the formation of new species). The line between two specification events, the internode, represents at least one hypothetical ancestor."
