Answer:
As the animals die, they get covered in layers. The lowest being the oldest. The difference is showing us a direct link between the two fossils. This means that the longer-spined sea urchins existed before the shorter-spined sea urchins. And evolved to have shorter spines rather than long ones.
Explanation:
Considering these statements;
F. the heart is composed of muscle tissue
G Hormones can trigger asthma attacks
H The rib cage expands to move air into the lungs
J blood cells can attackpathogens
The most appropriate statement that describes one possible interaction between the endocrine and the respiratory systems is G. Hormones can trigger Asthma attacks.
Endocrine systems releases hormones into the bloodstream so that one organ can communicate with another. Respiratory system brings in air to the lungs, where it diffuses into the bloodstream and also excretes carbon dioxide.
The correct answer is to "dilute with milk and water". The patient should not be induced to vomit to prevent aspiration as this can lead to another condition which is aspiration pneumonia. The patient should be given either a glass of milk or a glass of water for ingestion of petroleum jelly.
To answer this question, subtract from the total population of 1000 the homozygous dominant (DD) frogs of 280 and the homozygous recessive (dd) frogs of 220, and you are left with 500 frogs that by default are <span>heterozygotes (dD). The frequency of these frogs would be 500/1000 = 0.5</span>
