Answer:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Answer:
b. snake and earthworm
Explanation:
embryos are different from each other in early stages- all the others look similar
Photosynthesis will produce oxygen gas that will be taken up by humans for respiration. Respiration will produce carbon dioxide that will be taken up by plants for photosynthesis. So both waste products will be recycled and reused so therefore an example of zero waste world
Answer:
22.6 g
Explanation:
First we <u>use the PV=nRT equation</u>:
- R = 0.082 atm·L·mol⁻¹·K⁻¹
- T = 24 °C ⇒ 24 + 273.16 = 297.16 K
We <u>input the data</u>:
- 7.5 atm * 2.3 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 297.16 K
And <u>solve for n</u>:
Then we <u>convert 0.708 moles of oxygen gas (O₂) to grams</u>, using its <em>molar mass</em>:
- 0.708 mol * 32 g/mol = 22.6 g
K. Pottasium is in period 4 and group 1. It would be classified as an Alkali metal, and its a metal!
A.