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AnnyKZ [126]
3 years ago
15

During the cretaceous period, reptiles were the dominant species, and dinosaurs ruled earth. plants developed flowers and fruits

. at the end of the cretaceous period, about 65 million years ago, 50% of the plants and animals on earth became extinct and dinosaurs were never to be seen again. what is thought to have caused the mass extinction at the end of the cretaceous period?
a.global warming
b.an asteroid hitting earth in mexico
c.extensive volcanic activity world-wide
d.the start of glaciation and climatic changes
Biology
2 answers:
snow_tiger [21]3 years ago
6 0

Answer:

it B very sure

Explanation:

Mademuasel [1]3 years ago
5 0

Answer:

B

Explanation:

I took it on usa test prep

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sleet_krkn [62]

Answer:

many anterior pituitary hormones regulate other endocrine glands whereas posterior pituitary hormones regulate nonendocrine tissues

Explanation:

Anterior pituitary or adenohypophysis is the anterior lobe of the pituitary gland. Secretion of endocrine cells of the anterior pituitary is controlled by regulatory hormones released by hypothalamus. The hypothalamic releasing hormones bind to anterior pituitary endocrine cells, upregulating or downregulating their release of hormones. Anterior pituitary hormones stimulate endocrine glands: FSH and LH (ovaries and testes), TSH (thyroid), and ACTH (adrenal cortex).

Posterior pituitary or neurohypophysis is the posterior lobe of the pituitary gland. It  is not glandular it is just a collection of axonal projections from the hypothalamus. Posterior pituitary hormones regulate nonendocrine tissues: ADH-vasopressin (kidney tubules) and oxytocin (mammary glands, uterine tissues, brain).

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If the solute carries a net charge, however, both its concentration gradient and the electrical potential difference across the membrane, the membrane potential,influence its transport. ... Thus, transport by carriers can be either active or passive, whereas transport by channel proteins is always passive.

Explanation:

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They destroyed crops and land, leading to soil problems.
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Which statement is supported by the results of rutherford's gold foil experiment
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I would say it is B!... there are dense, positive charged mass in the center of the atom
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You can also measure the height of a person in feet, however, that is only used in America, and it is not SI unit.
Grams are used for weight, and no person is one kilometer tall, that is a very large distance.
8 0
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