Answer:
B: volcanic activity
D: fossil fuel consumption
Explanation:
Fossil fuel consumption and volcanic activity are the two factors that has a great influenced on the global temperatures. Fossil fuel consumption is a human activity and volcanic activity both releases carbondioxide gas while burning. This carbondioxide gas is a greenhouse gas which block the reflected solar radiation and leads to increase in the surface temperature of the earth.
Answer:
The only correct answer is D) dura mater ..brain protection
Explanation:
Allantois helps the embryo exchange gases and handle liquid waste, it does not do food absorption, yolk sac is not embryonic bladder, chorion does the gas exchange not amnion, peritoneum is the abdominal protection not heart.
Answer:
A) The resources used by both species of salamanders are available in limited supply
B) Body size is a heritable trait in salamanders Salamanders that are closer in body sine compete less strongly for food
C) The sympatric salamander populations evolved their present body sizes afterthey became sympatric
D) In sympatric populations, smaller P. Cinereus adults survive better and reproduce more.
All of the above are correct.
Answer:
Water is one of the reactants in photosynthesis, it provides the hydrogen needed to form glucose (a hydrocarbon). Water and carbon dioxide enter the leaf through the stomata (small holes on the underside of the leaf that are controlled by gaurd cells) by diffusion.
Some genetic mutations can be completely harmless, while others are life-altering. Mutations happen when DNA is copied incorrectly. This causes an irregularity in the DNA. Mutations are permanent changes to genetic material that can be passed on to offspring. These changes happen randomly and can occur in any type of gene. While some mutations are not harmful (hazel eyes, for example), many mutations have harmful effects on health.